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FKIE_CVE-2026-89989

Vulnerability from fkie_nvd - Published: 2026-09-16 11:17 - Updated: 2026-09-16 11:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: ima: Check for ERR_PTR from dentry_path() in validate_hash_algo() dentry_path() returns ERR_PTR(-ENAMETOOLONG) when the path exceeds the buffer. validate_hash_algo() passes the result straight to integrity_audit_msg() without checking. ERR_PTR is not NULL, so integrity_audit_message() sees a valid pointer and calls strlen() on it, which faults: BUG: unable to handle page fault for address: ffffffffffffffdc RIP: 0010:strlen+0x30/0xa0 Call Trace: audit_log_untrustedstring+0x19/0x30 integrity_audit_message+0x366/0x4f0 ima_inode_setxattr+0x512/0x5f0 Check for IS_ERR() and use NULL instead, which makes the audit message skip the name= field instead of crashing.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0de5b525c0cd7d202848b8adfde3c01c287fb1a6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/30b5c0e17dcad72b6b2f987319aa645570e6376d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8861f6d5c0678a7c5089c7b272509fc5931b8437
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e69d683ebd7def04557fe758ff123105d7d9840
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d62a84a78de5f29c642fa3bd4eee072ba7289cb4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d6fade89903c8fd0af6c956242aec8b927040e02
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f8a2f2a4602318eb93d49d27fd0d0fdaab17edde
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/integrity/ima/ima_appraise.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d6fade89903c8fd0af6c956242aec8b927040e02",
              "status": "affected",
              "version": "4f2946aa0c45c78b4f4ef101bab9694e38c68db0",
              "versionType": "git"
            },
            {
              "lessThan": "0de5b525c0cd7d202848b8adfde3c01c287fb1a6",
              "status": "affected",
              "version": "4f2946aa0c45c78b4f4ef101bab9694e38c68db0",
              "versionType": "git"
            },
            {
              "lessThan": "30b5c0e17dcad72b6b2f987319aa645570e6376d",
              "status": "affected",
              "version": "4f2946aa0c45c78b4f4ef101bab9694e38c68db0",
              "versionType": "git"
            },
            {
              "lessThan": "9e69d683ebd7def04557fe758ff123105d7d9840",
              "status": "affected",
              "version": "4f2946aa0c45c78b4f4ef101bab9694e38c68db0",
              "versionType": "git"
            },
            {
              "lessThan": "f8a2f2a4602318eb93d49d27fd0d0fdaab17edde",
              "status": "affected",
              "version": "4f2946aa0c45c78b4f4ef101bab9694e38c68db0",
              "versionType": "git"
            },
            {
              "lessThan": "d62a84a78de5f29c642fa3bd4eee072ba7289cb4",
              "status": "affected",
              "version": "4f2946aa0c45c78b4f4ef101bab9694e38c68db0",
              "versionType": "git"
            },
            {
              "lessThan": "8861f6d5c0678a7c5089c7b272509fc5931b8437",
              "status": "affected",
              "version": "4f2946aa0c45c78b4f4ef101bab9694e38c68db0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/integrity/ima/ima_appraise.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: Check for ERR_PTR from dentry_path() in validate_hash_algo()\n\ndentry_path() returns ERR_PTR(-ENAMETOOLONG) when the path exceeds the\nbuffer. validate_hash_algo() passes the result straight to\nintegrity_audit_msg() without checking. ERR_PTR is not NULL, so\nintegrity_audit_message() sees a valid pointer and calls strlen() on\nit, which faults:\n\n    BUG: unable to handle page fault for address: ffffffffffffffdc\n    RIP: 0010:strlen+0x30/0xa0\n    Call Trace:\n     audit_log_untrustedstring+0x19/0x30\n     integrity_audit_message+0x366/0x4f0\n     ima_inode_setxattr+0x512/0x5f0\n\nCheck for IS_ERR() and use NULL instead, which makes the audit message\nskip the name= field instead of crashing."
    }
  ],
  "id": "CVE-2026-89989",
  "lastModified": "2026-09-16T11:17:10.010",
  "metrics": {},
  "published": "2026-09-16T11:17:10.010",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0de5b525c0cd7d202848b8adfde3c01c287fb1a6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/30b5c0e17dcad72b6b2f987319aa645570e6376d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8861f6d5c0678a7c5089c7b272509fc5931b8437"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9e69d683ebd7def04557fe758ff123105d7d9840"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d62a84a78de5f29c642fa3bd4eee072ba7289cb4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d6fade89903c8fd0af6c956242aec8b927040e02"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f8a2f2a4602318eb93d49d27fd0d0fdaab17edde"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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