CVE-2025-39998 (GCVE-0-2025-39998)

Vulnerability from cvelistv5 – Published: 2025-10-15 07:58 – Updated: 2026-01-02 15:32
VLAI?
Title
scsi: target: target_core_configfs: Add length check to avoid buffer overflow
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: target: target_core_configfs: Add length check to avoid buffer overflow A buffer overflow arises from the usage of snprintf to write into the buffer "buf" in target_lu_gp_members_show function located in /drivers/target/target_core_configfs.c. This buffer is allocated with size LU_GROUP_NAME_BUF (256 bytes). snprintf(...) formats multiple strings into buf with the HBA name (hba->hba_group.cg_item), a slash character, a devicename (dev-> dev_group.cg_item) and a newline character, the total formatted string length may exceed the buffer size of 256 bytes. Since snprintf() returns the total number of bytes that would have been written (the length of %s/%sn ), this value may exceed the buffer length (256 bytes) passed to memcpy(), this will ultimately cause function memcpy reporting a buffer overflow error. An additional check of the return value of snprintf() can avoid this buffer overflow.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < e6eeee5dc0d9221ff96d1b229b1d0222c8871b84 (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < 764a91e2fc9639e07aac93bc70e387e6b1e33084 (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < ddc79fba132b807ff775467acceaf48b456e008b (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4 (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < f03aa5e39da7d045615b3951d2a6ca1d7132f881 (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < 53c6351597e6a17ec6619f6f060d54128cb9a187 (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < 4b292286949588bd2818e66ff102db278de8dd26 (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < a150275831b765b0f1de8b8ff52ec5c6933ac15d (git)
Affected: c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 , < 27e06650a5eafe832a90fd2604f0c5e920857fae (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.38
Unaffected: 0 , < 2.6.38 (semver)
Unaffected: 5.4.301 , ≤ 5.4.* (semver)
Unaffected: 5.10.246 , ≤ 5.10.* (semver)
Unaffected: 5.15.195 , ≤ 5.15.* (semver)
Unaffected: 6.1.156 , ≤ 6.1.* (semver)
Unaffected: 6.6.110 , ≤ 6.6.* (semver)
Unaffected: 6.12.51 , ≤ 6.12.* (semver)
Unaffected: 6.16.11 , ≤ 6.16.* (semver)
Unaffected: 6.17.1 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (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": [
            "drivers/target/target_core_configfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e6eeee5dc0d9221ff96d1b229b1d0222c8871b84",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "764a91e2fc9639e07aac93bc70e387e6b1e33084",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "ddc79fba132b807ff775467acceaf48b456e008b",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "f03aa5e39da7d045615b3951d2a6ca1d7132f881",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "53c6351597e6a17ec6619f6f060d54128cb9a187",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "4b292286949588bd2818e66ff102db278de8dd26",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "a150275831b765b0f1de8b8ff52ec5c6933ac15d",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            },
            {
              "lessThan": "27e06650a5eafe832a90fd2604f0c5e920857fae",
              "status": "affected",
              "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/target/target_core_configfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.38"
            },
            {
              "lessThan": "2.6.38",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.301",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.246",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.156",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.301",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.246",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.195",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.156",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.110",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.51",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.11",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.1",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "2.6.38",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: target_core_configfs: Add length check to avoid buffer overflow\n\nA buffer overflow arises from the usage of snprintf to write into the\nbuffer \"buf\" in target_lu_gp_members_show function located in\n/drivers/target/target_core_configfs.c. This buffer is allocated with\nsize LU_GROUP_NAME_BUF (256 bytes).\n\nsnprintf(...) formats multiple strings into buf with the HBA name\n(hba-\u003ehba_group.cg_item), a slash character, a devicename (dev-\u003e\ndev_group.cg_item) and a newline character, the total formatted string\nlength may exceed the buffer size of 256 bytes.\n\nSince snprintf() returns the total number of bytes that would have been\nwritten (the length of %s/%sn ), this value may exceed the buffer length\n(256 bytes) passed to memcpy(), this will ultimately cause function\nmemcpy reporting a buffer overflow error.\n\nAn additional check of the return value of snprintf() can avoid this\nbuffer overflow."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-02T15:32:48.667Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e6eeee5dc0d9221ff96d1b229b1d0222c8871b84"
        },
        {
          "url": "https://git.kernel.org/stable/c/764a91e2fc9639e07aac93bc70e387e6b1e33084"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddc79fba132b807ff775467acceaf48b456e008b"
        },
        {
          "url": "https://git.kernel.org/stable/c/e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/f03aa5e39da7d045615b3951d2a6ca1d7132f881"
        },
        {
          "url": "https://git.kernel.org/stable/c/53c6351597e6a17ec6619f6f060d54128cb9a187"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b292286949588bd2818e66ff102db278de8dd26"
        },
        {
          "url": "https://git.kernel.org/stable/c/a150275831b765b0f1de8b8ff52ec5c6933ac15d"
        },
        {
          "url": "https://git.kernel.org/stable/c/27e06650a5eafe832a90fd2604f0c5e920857fae"
        }
      ],
      "title": "scsi: target: target_core_configfs: Add length check to avoid buffer overflow",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39998",
    "datePublished": "2025-10-15T07:58:22.354Z",
    "dateReserved": "2025-04-16T07:20:57.151Z",
    "dateUpdated": "2026-01-02T15:32:48.667Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-39998",
      "date": "2026-04-18",
      "epss": "0.00211",
      "percentile": "0.43637"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39998\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-15T08:15:38.077\",\"lastModified\":\"2025-10-29T14:15:52.250\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: target: target_core_configfs: Add length check to avoid buffer overflow\\n\\nA buffer overflow arises from the usage of snprintf to write into the\\nbuffer \\\"buf\\\" in target_lu_gp_members_show function located in\\n/drivers/target/target_core_configfs.c. This buffer is allocated with\\nsize LU_GROUP_NAME_BUF (256 bytes).\\n\\nsnprintf(...) formats multiple strings into buf with the HBA name\\n(hba-\u003ehba_group.cg_item), a slash character, a devicename (dev-\u003e\\ndev_group.cg_item) and a newline character, the total formatted string\\nlength may exceed the buffer size of 256 bytes.\\n\\nSince snprintf() returns the total number of bytes that would have been\\nwritten (the length of %s/%sn ), this value may exceed the buffer length\\n(256 bytes) passed to memcpy(), this will ultimately cause function\\nmemcpy reporting a buffer overflow error.\\n\\nAn additional check of the return value of snprintf() can avoid this\\nbuffer overflow.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/27e06650a5eafe832a90fd2604f0c5e920857fae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4b292286949588bd2818e66ff102db278de8dd26\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/53c6351597e6a17ec6619f6f060d54128cb9a187\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/764a91e2fc9639e07aac93bc70e387e6b1e33084\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a150275831b765b0f1de8b8ff52ec5c6933ac15d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ddc79fba132b807ff775467acceaf48b456e008b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e6eeee5dc0d9221ff96d1b229b1d0222c8871b84\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f03aa5e39da7d045615b3951d2a6ca1d7132f881\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.