GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2024-26878 (GCVE-0-2024-26878)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:27 – Updated: 2026-05-12 11:49
VLAI
Title
quota: Fix potential NULL pointer dereference
Summary
In the Linux kernel, the following vulnerability has been resolved: quota: Fix potential NULL pointer dereference Below race may cause NULL pointer dereference P1 P2 dquot_free_inode quota_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[type] = NULL (2) spin_lock(&dquots[cnt]->dq_dqb_lock) (3) .... If dquot_free_inode(or other routines) checks inode's quota pointers (1) before quota_off sets it to NULL(2) and use it (3) after that, NULL pointer dereference will be triggered. So let's fix it by using a temporary pointer to avoid this issue.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:48 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < 8514899c1a4edf802f03c408db901063aa3f05a1 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < 49669f8e7eb053f91d239df7b1bfb4500255a9d0 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < 61380537aa6dd32d8a723d98b8f1bd1b11d8fee0 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < 1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < 7f9e833fc0f9b47be503af012eb5903086939754 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < 40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < f2649d98aa9ca8623149b3cb8df00c944f5655c7 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < 6afc9f4434fa8063aa768c2bf5bf98583aee0877 (git)
Affected: 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac , < d0aa72604fbd80c8aabb46eda00535ed35570f1f (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 4.19.311 , ≤ 4.19.* (semver)
Unaffected: 5.4.273 , ≤ 5.4.* (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T00:21:04.234Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26878",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:48:25.754517Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:33:25.716Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1.5",
                "status": "affected",
                "version": "V3.1.0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1.5",
                "status": "affected",
                "version": "V3.1.0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1.5",
                "status": "affected",
                "version": "V3.1.0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1.5",
                "status": "affected",
                "version": "V3.1.0",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "V3.1.5",
                "status": "affected",
                "version": "V3.1.0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T11:49:56.835Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
          },
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/quota/dquot.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8514899c1a4edf802f03c408db901063aa3f05a1",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "49669f8e7eb053f91d239df7b1bfb4500255a9d0",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "61380537aa6dd32d8a723d98b8f1bd1b11d8fee0",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "7f9e833fc0f9b47be503af012eb5903086939754",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "f2649d98aa9ca8623149b3cb8df00c944f5655c7",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "6afc9f4434fa8063aa768c2bf5bf98583aee0877",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            },
            {
              "lessThan": "d0aa72604fbd80c8aabb46eda00535ed35570f1f",
              "status": "affected",
              "version": "7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/quota/dquot.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.14"
            },
            {
              "lessThan": "4.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.311",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.214",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.153",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.311",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.273",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.214",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.153",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.83",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.23",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.11",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8.2",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nquota: Fix potential NULL pointer dereference\n\nBelow race may cause NULL pointer dereference\n\nP1\t\t\t\t\tP2\ndquot_free_inode\t\t\tquota_off\n\t\t\t\t\t  drop_dquot_ref\n\t\t\t\t\t   remove_dquot_ref\n\t\t\t\t\t   dquots = i_dquot(inode)\n  dquots = i_dquot(inode)\n  srcu_read_lock\n  dquots[cnt]) != NULL (1)\n\t\t\t\t\t     dquots[type] = NULL (2)\n  spin_lock(\u0026dquots[cnt]-\u003edq_dqb_lock) (3)\n   ....\n\nIf dquot_free_inode(or other routines) checks inode\u0027s quota pointers (1)\nbefore quota_off sets it to NULL(2) and use it (3) after that, NULL pointer\ndereference will be triggered.\n\nSo let\u0027s fix it by using a temporary pointer to avoid this issue."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:06:00.874Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25"
        },
        {
          "url": "https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754"
        },
        {
          "url": "https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f"
        }
      ],
      "title": "quota: Fix potential NULL pointer dereference",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26878",
    "datePublished": "2024-04-17T10:27:35.838Z",
    "dateReserved": "2024-02-19T14:20:24.185Z",
    "dateUpdated": "2026-05-12T11:49:56.835Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-26878",
      "date": "2026-09-16",
      "epss": "0.00189",
      "percentile": "0.08756"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"4.19.311\", \"matchCriteriaId\": \"A6E19FC1-2A3F-4FF8-805C-2864C71553EC\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.273\", \"matchCriteriaId\": \"620FD8B7-BF03-43E0-951A-0A58461D4C55\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.214\", \"matchCriteriaId\": \"65987874-467B-4D3B-91D6-68A129B34FB8\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.153\", \"matchCriteriaId\": \"ACB69438-845D-4E3C-B114-3140611F9C0B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.83\", \"matchCriteriaId\": \"121A07F6-F505-4C47-86BF-9BB6CC7B6C19\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.23\", \"matchCriteriaId\": \"E00814DC-0BA7-431A-9926-80FEB4A96C68\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.7.11\", \"matchCriteriaId\": \"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.8\", \"versionEndExcluding\": \"6.8.2\", \"matchCriteriaId\": \"543A75FF-25B8-4046-A514-1EA8EDD87AB1\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nquota: Fix potential NULL pointer dereference\\n\\nBelow race may cause NULL pointer dereference\\n\\nP1\\t\\t\\t\\t\\tP2\\ndquot_free_inode\\t\\t\\tquota_off\\n\\t\\t\\t\\t\\t  drop_dquot_ref\\n\\t\\t\\t\\t\\t   remove_dquot_ref\\n\\t\\t\\t\\t\\t   dquots = i_dquot(inode)\\n  dquots = i_dquot(inode)\\n  srcu_read_lock\\n  dquots[cnt]) != NULL (1)\\n\\t\\t\\t\\t\\t     dquots[type] = NULL (2)\\n  spin_lock(\u0026dquots[cnt]-\u003edq_dqb_lock) (3)\\n   ....\\n\\nIf dquot_free_inode(or other routines) checks inode\u0027s quota pointers (1)\\nbefore quota_off sets it to NULL(2) and use it (3) after that, NULL pointer\\ndereference will be triggered.\\n\\nSo let\u0027s fix it by using a temporary pointer to avoid this issue.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cuota: corrige una posible desreferencia del puntero NULL La siguiente carrera puede causar una desreferencia del puntero NULL P1 P2 dquot_free_inode quote_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[tipo] = NULL (2) spin_lock(\u0026amp;dquots[cnt]-\u0026gt;dq_dqb_lock) (3) .... Si dquot_free_inode(u otras rutinas) verifica los punteros de cuota del inodo (1) antes de que cuota_off lo establezca a NULL(2) y usarlo (3) despu\\u00e9s de eso, se activar\\u00e1 la desreferencia del puntero NULL. Entonces, solucion\\u00e9moslo usando un puntero temporal para evitar este problema.\"}]",
      "id": "CVE-2024-26878",
      "lastModified": "2025-01-14T14:49:44.283",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 4.7, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.0, \"impactScore\": 3.6}]}",
      "published": "2024-04-17T11:15:09.870",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-362\"}, {\"lang\": \"en\", \"value\": \"CWE-476\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26878\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:09.870\",\"lastModified\":\"2026-06-17T07:18:34.713\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nquota: Fix potential NULL pointer dereference\\n\\nBelow race may cause NULL pointer dereference\\n\\nP1\\t\\t\\t\\t\\tP2\\ndquot_free_inode\\t\\t\\tquota_off\\n\\t\\t\\t\\t\\t  drop_dquot_ref\\n\\t\\t\\t\\t\\t   remove_dquot_ref\\n\\t\\t\\t\\t\\t   dquots = i_dquot(inode)\\n  dquots = i_dquot(inode)\\n  srcu_read_lock\\n  dquots[cnt]) != NULL (1)\\n\\t\\t\\t\\t\\t     dquots[type] = NULL (2)\\n  spin_lock(\u0026dquots[cnt]-\u003edq_dqb_lock) (3)\\n   ....\\n\\nIf dquot_free_inode(or other routines) checks inode\u0027s quota pointers (1)\\nbefore quota_off sets it to NULL(2) and use it (3) after that, NULL pointer\\ndereference will be triggered.\\n\\nSo let\u0027s fix it by using a temporary pointer to avoid this issue.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cuota: corrige una posible desreferencia del puntero NULL La siguiente carrera puede causar una desreferencia del puntero NULL P1 P2 dquot_free_inode quote_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[tipo] = NULL (2) spin_lock(\u0026amp;dquots[cnt]-\u0026gt;dq_dqb_lock) (3) .... Si dquot_free_inode(u otras rutinas) verifica los punteros de cuota del inodo (1) antes de que cuota_off lo establezca a NULL(2) y usarlo (3) despu\u00e9s de eso, se activar\u00e1 la desreferencia del puntero NULL. Entonces, solucion\u00e9moslo usando un puntero temporal para evitar este problema.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/quota/dquot.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"8514899c1a4edf802f03c408db901063aa3f05a1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"49669f8e7eb053f91d239df7b1bfb4500255a9d0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"7f9e833fc0f9b47be503af012eb5903086939754\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"f2649d98aa9ca8623149b3cb8df00c944f5655c7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"6afc9f4434fa8063aa768c2bf5bf98583aee0877\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\",\"lessThan\":\"d0aa72604fbd80c8aabb46eda00535ed35570f1f\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/quota/dquot.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.311\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.273\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.214\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.153\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.83\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.23\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.7.11\",\"lessThanOrEqual\":\"6.7.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.2\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.0\",\"lessThan\":\"V3.1.5\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T15:48:25.754517Z\",\"id\":\"CVE-2024-26878\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"},{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.19.311\",\"matchCriteriaId\":\"A6E19FC1-2A3F-4FF8-805C-2864C71553EC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.273\",\"matchCriteriaId\":\"620FD8B7-BF03-43E0-951A-0A58461D4C55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.214\",\"matchCriteriaId\":\"65987874-467B-4D3B-91D6-68A129B34FB8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.153\",\"matchCriteriaId\":\"ACB69438-845D-4E3C-B114-3140611F9C0B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.83\",\"matchCriteriaId\":\"121A07F6-F505-4C47-86BF-9BB6CC7B6C19\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.23\",\"matchCriteriaId\":\"E00814DC-0BA7-431A-9926-80FEB4A96C68\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.11\",\"matchCriteriaId\":\"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.8.2\",\"matchCriteriaId\":\"543A75FF-25B8-4046-A514-1EA8EDD87AB1\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-398330.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T08:03:17+00:00",
      "cve": "CVE-2024-26878",
      "id": "CVE-2024-26878",
      "initial_release_date": "2024-04-17T00:00:00+00:00",
      "product_status:fixed": "709",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "8",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: quota: Fix potential NULL pointer dereference",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26878.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T00:43:36Z",
      "cve": "CVE-2024-26878",
      "id": "CVE-2024-26878",
      "initial_release_date": "2024-04-19T02:18:36Z",
      "product_status:known_affected": "535",
      "product_status:recommended": "775",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26878",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26878.json",
      "version": "114"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:21:04.234Z\"}}, {\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\", \"versions\": [{\"status\": \"affected\", \"version\": \"V3.1.0\", \"lessThan\": \"V3.1.5\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-398330.html\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-265688.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-05-12T11:49:56.835Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26878\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:48:25.754517Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:16.636Z\"}}], \"cna\": {\"title\": \"quota: Fix potential NULL pointer dereference\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"8514899c1a4edf802f03c408db901063aa3f05a1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"49669f8e7eb053f91d239df7b1bfb4500255a9d0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"7f9e833fc0f9b47be503af012eb5903086939754\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"f2649d98aa9ca8623149b3cb8df00c944f5655c7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"6afc9f4434fa8063aa768c2bf5bf98583aee0877\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac\", \"lessThan\": \"d0aa72604fbd80c8aabb46eda00535ed35570f1f\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/quota/dquot.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.14\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.14\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.311\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.273\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.214\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.153\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.23\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/quota/dquot.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1\"}, {\"url\": \"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0\"}, {\"url\": \"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0\"}, {\"url\": \"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25\"}, {\"url\": \"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754\"}, {\"url\": \"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5\"}, {\"url\": \"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7\"}, {\"url\": \"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877\"}, {\"url\": \"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nquota: Fix potential NULL pointer dereference\\n\\nBelow race may cause NULL pointer dereference\\n\\nP1\\t\\t\\t\\t\\tP2\\ndquot_free_inode\\t\\t\\tquota_off\\n\\t\\t\\t\\t\\t  drop_dquot_ref\\n\\t\\t\\t\\t\\t   remove_dquot_ref\\n\\t\\t\\t\\t\\t   dquots = i_dquot(inode)\\n  dquots = i_dquot(inode)\\n  srcu_read_lock\\n  dquots[cnt]) != NULL (1)\\n\\t\\t\\t\\t\\t     dquots[type] = NULL (2)\\n  spin_lock(\u0026dquots[cnt]-\u003edq_dqb_lock) (3)\\n   ....\\n\\nIf dquot_free_inode(or other routines) checks inode\u0027s quota pointers (1)\\nbefore quota_off sets it to NULL(2) and use it (3) after that, NULL pointer\\ndereference will be triggered.\\n\\nSo let\u0027s fix it by using a temporary pointer to avoid this issue.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.311\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.273\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.214\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.153\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.83\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.23\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.11\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.2\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"4.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:06:00.874Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26878\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T11:49:56.835Z\", \"dateReserved\": \"2024-02-19T14:20:24.185Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:27:35.838Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.