{"id":"CVE-2026-89989","summary":"ima: Check for ERR_PTR from dentry_path() in validate_hash_algo()","details":"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.","modified":"2026-09-18T03:48:34.517023875Z","published":"2026-09-16T10:33:03.703Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89989.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0de5b525c0cd7d202848b8adfde3c01c287fb1a6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/30b5c0e17dcad72b6b2f987319aa645570e6376d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8861f6d5c0678a7c5089c7b272509fc5931b8437"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9e69d683ebd7def04557fe758ff123105d7d9840"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d62a84a78de5f29c642fa3bd4eee072ba7289cb4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d6fade89903c8fd0af6c956242aec8b927040e02"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f8a2f2a4602318eb93d49d27fd0d0fdaab17edde"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89989.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89989"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4f2946aa0c45c78b4f4ef101bab9694e38c68db0"},{"fixed":"d6fade89903c8fd0af6c956242aec8b927040e02"},{"fixed":"0de5b525c0cd7d202848b8adfde3c01c287fb1a6"},{"fixed":"30b5c0e17dcad72b6b2f987319aa645570e6376d"},{"fixed":"9e69d683ebd7def04557fe758ff123105d7d9840"},{"fixed":"f8a2f2a4602318eb93d49d27fd0d0fdaab17edde"},{"fixed":"d62a84a78de5f29c642fa3bd4eee072ba7289cb4"},{"fixed":"8861f6d5c0678a7c5089c7b272509fc5931b8437"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89989.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89989.json"}}],"schema_version":"1.9.0"}