CVE-2026-43124 (GCVE-0-2026-43124)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-07 17:14
VLAI?
Title
pstore: ram_core: fix incorrect success return when vmap() fails
Summary
In the Linux kernel, the following vulnerability has been resolved: pstore: ram_core: fix incorrect success return when vmap() fails In persistent_ram_vmap(), vmap() may return NULL on failure. If offset is non-zero, adding offset_in_page(start) causes the function to return a non-NULL pointer even though the mapping failed. persistent_ram_buffer_map() therefore incorrectly returns success. Subsequent access to prz->buffer may dereference an invalid address and cause crashes. Add proper NULL checking for vmap() failures.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < d47234840aeb4182ed3ee795c578b1dfa9cbd25b (git)
Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < 49918dd52615097529811d21ec6074dd02ebe77c (git)
Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < 8baa234181f632cabacf73e4834a910859e9fcc9 (git)
Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < 1da904e84de608907662ad8a51ba9c571d61e003 (git)
Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < 8d849adfbc3e98417fb541620568db1a759ef441 (git)
Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb (git)
Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < 88d5b28f63c7aac1271784e3b800ed405d1cde75 (git)
Affected: 831b624df1b420c8f9281ed1307a8db23afb72df , < 05363abc7625cf18c96e67f50673cd07f11da5e9 (git)
Affected: 9095f19baae92afb978f8df77d19280fe291b337 (git)
Affected: 36a9916189b46b78dbf4fa542739b464444f0537 (git)
Affected: 1cd01dba1355e291f636555b1920625ed58c1623 (git)
Affected: 7026e2457c5b0c0e8a81e65a8209b8420a437b4d (git)
Affected: 1e5b387747ba285a64348b9a96b246d0b9d52b03 (git)
Affected: d0028f48b33086cf6d8f87831a650866107b5785 (git)
Create a notification for this product.
    Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/pstore/ram_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d47234840aeb4182ed3ee795c578b1dfa9cbd25b",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "lessThan": "49918dd52615097529811d21ec6074dd02ebe77c",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "lessThan": "8baa234181f632cabacf73e4834a910859e9fcc9",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "lessThan": "1da904e84de608907662ad8a51ba9c571d61e003",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "lessThan": "8d849adfbc3e98417fb541620568db1a759ef441",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "lessThan": "2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "lessThan": "88d5b28f63c7aac1271784e3b800ed405d1cde75",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "lessThan": "05363abc7625cf18c96e67f50673cd07f11da5e9",
              "status": "affected",
              "version": "831b624df1b420c8f9281ed1307a8db23afb72df",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9095f19baae92afb978f8df77d19280fe291b337",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36a9916189b46b78dbf4fa542739b464444f0537",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1cd01dba1355e291f636555b1920625ed58c1623",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7026e2457c5b0c0e8a81e65a8209b8420a437b4d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1e5b387747ba285a64348b9a96b246d0b9d52b03",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0028f48b33086cf6d8f87831a650866107b5785",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/pstore/ram_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.252",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.252",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.202",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "4.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.16.62",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.18.123",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.4.158",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.9.129",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.14.72",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.18.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npstore: ram_core: fix incorrect success return when vmap() fails\n\nIn persistent_ram_vmap(), vmap() may return NULL on failure.\n\nIf offset is non-zero, adding offset_in_page(start) causes the function\nto return a non-NULL pointer even though the mapping failed.\npersistent_ram_buffer_map() therefore incorrectly returns success.\n\nSubsequent access to prz-\u003ebuffer may dereference an invalid address\nand cause crashes.\n\nAdd proper NULL checking for vmap() failures."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T17:14:16.842Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b"
        },
        {
          "url": "https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c"
        },
        {
          "url": "https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003"
        },
        {
          "url": "https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75"
        },
        {
          "url": "https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9"
        }
      ],
      "title": "pstore: ram_core: fix incorrect success return when vmap() fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43124",
    "datePublished": "2026-05-06T11:27:10.221Z",
    "dateReserved": "2026-05-01T14:12:55.987Z",
    "dateUpdated": "2026-05-07T17:14:16.842Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-43124",
      "date": "2026-05-08",
      "epss": "0.00024",
      "percentile": "0.06984"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43124\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-06T12:16:29.313\",\"lastModified\":\"2026-05-08T18:02:22.100\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npstore: ram_core: fix incorrect success return when vmap() fails\\n\\nIn persistent_ram_vmap(), vmap() may return NULL on failure.\\n\\nIf offset is non-zero, adding offset_in_page(start) causes the function\\nto return a non-NULL pointer even though the mapping failed.\\npersistent_ram_buffer_map() therefore incorrectly returns success.\\n\\nSubsequent access to prz-\u003ebuffer may dereference an invalid address\\nand cause crashes.\\n\\nAdd proper NULL checking for vmap() failures.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.16.62\",\"versionEndExcluding\":\"5.10.252\",\"matchCriteriaId\":\"60A2158E-664E-490E-AC28-0DFD1C0680CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.202\",\"matchCriteriaId\":\"4002FC2B-1456-4666-B240-0EBF590C4671\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.165\",\"matchCriteriaId\":\"797C7F46-D0BE-4FB8-A502-C5EF8E6B6654\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.128\",\"matchCriteriaId\":\"851E9353-6C09-4CC9-877E-E09DB164A3C2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.75\",\"matchCriteriaId\":\"BCE16369-98ED-41CF-8995-DFDC10B288D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.16\",\"matchCriteriaId\":\"B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.6\",\"matchCriteriaId\":\"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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.