{"id":"CVE-2026-89989","title":"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","summary":"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() p…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 < d6fade89903c8fd0af6c956242aec8b927040e02","Linux >= 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 < 0de5b525c0cd7d202848b8adfde3c01c287fb1a6","Linux >= 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 < 30b5c0e17dcad72b6b2f987319aa645570e6376d","Linux >= 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 < 9e69d683ebd7def04557fe758ff123105d7d9840","Linux >= 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 < f8a2f2a4602318eb93d49d27fd0d0fdaab17edde","Linux >= 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 < d62a84a78de5f29c642fa3bd4eee072ba7289cb4","Linux >= 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 < 8861f6d5c0678a7c5089c7b272509fc5931b8437","Linux 5.15"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T11:17:10.010","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89989","references":[{"url":"https://git.kernel.org/stable/c/0de5b525c0cd7d202848b8adfde3c01c287fb1a6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/30b5c0e17dcad72b6b2f987319aa645570e6376d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8861f6d5c0678a7c5089c7b272509fc5931b8437","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9e69d683ebd7def04557fe758ff123105d7d9840","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d62a84a78de5f29c642fa3bd4eee072ba7289cb4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d6fade89903c8fd0af6c956242aec8b927040e02","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f8a2f2a4602318eb93d49d27fd0d0fdaab17edde","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.949Z","epss":0.00205,"epssPercentile":0.10893,"slug":"CVE-2026-89989","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}