{"id":"CVE-2026-89989","state":"PUBLISHED","title":"ima: Check for ERR_PTR from dentry_path() in validate_hash_algo()","description":"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.","publishedAt":"2026-09-16T10:33:03.703Z","updatedAt":"2026-10-19T08:56:03.599Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"d6fade89903c8fd0af6c956242aec8b927040e02","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"0de5b525c0cd7d202848b8adfde3c01c287fb1a6","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"30b5c0e17dcad72b6b2f987319aa645570e6376d","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"9e69d683ebd7def04557fe758ff123105d7d9840","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"f8a2f2a4602318eb93d49d27fd0d0fdaab17edde","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"d62a84a78de5f29c642fa3bd4eee072ba7289cb4","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"8861f6d5c0678a7c5089c7b272509fc5931b8437","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/integrity/ima/ima_appraise.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/integrity/ima/ima_appraise.c"]}],"references":["https://git.kernel.org/stable/c/d6fade89903c8fd0af6c956242aec8b927040e02","https://git.kernel.org/stable/c/0de5b525c0cd7d202848b8adfde3c01c287fb1a6","https://git.kernel.org/stable/c/30b5c0e17dcad72b6b2f987319aa645570e6376d","https://git.kernel.org/stable/c/9e69d683ebd7def04557fe758ff123105d7d9840","https://git.kernel.org/stable/c/f8a2f2a4602318eb93d49d27fd0d0fdaab17edde","https://git.kernel.org/stable/c/d62a84a78de5f29c642fa3bd4eee072ba7289cb4","https://git.kernel.org/stable/c/8861f6d5c0678a7c5089c7b272509fc5931b8437"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89989.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89989","state":"PUBLISHED","datePublished":"2026-09-16T10:33:03.703Z","dateUpdated":"2026-10-19T08:56:03.599Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.780Z"},"containers":{"cna":{"title":"ima: Check for ERR_PTR from dentry_path() in validate_hash_algo()","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"d6fade89903c8fd0af6c956242aec8b927040e02","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"0de5b525c0cd7d202848b8adfde3c01c287fb1a6","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"30b5c0e17dcad72b6b2f987319aa645570e6376d","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"9e69d683ebd7def04557fe758ff123105d7d9840","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"f8a2f2a4602318eb93d49d27fd0d0fdaab17edde","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"d62a84a78de5f29c642fa3bd4eee072ba7289cb4","versionType":"git"},{"version":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0","status":"affected","lessThan":"8861f6d5c0678a7c5089c7b272509fc5931b8437","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/integrity/ima/ima_appraise.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/integrity/ima/ima_appraise.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d6fade89903c8fd0af6c956242aec8b927040e02"},{"url":"https://git.kernel.org/stable/c/0de5b525c0cd7d202848b8adfde3c01c287fb1a6"},{"url":"https://git.kernel.org/stable/c/30b5c0e17dcad72b6b2f987319aa645570e6376d"},{"url":"https://git.kernel.org/stable/c/9e69d683ebd7def04557fe758ff123105d7d9840"},{"url":"https://git.kernel.org/stable/c/f8a2f2a4602318eb93d49d27fd0d0fdaab17edde"},{"url":"https://git.kernel.org/stable/c/d62a84a78de5f29c642fa3bd4eee072ba7289cb4"},{"url":"https://git.kernel.org/stable/c/8861f6d5c0678a7c5089c7b272509fc5931b8437"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:56:03.599Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}