Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4f2946aa0c45c78b4f4ef101bab9694e38c68db0 to < d6fade89903c8fd0af6c956242aec8b927040e02affected4f2946aa0c45c78b4f4ef101bab9694e38c68db0 to < 0de5b525c0cd7d202848b8adfde3c01c287fb1a6affected4f2946aa0c45c78b4f4ef101bab9694e38c68db0 to < 30b5c0e17dcad72b6b2f987319aa645570e6376daffected4f2946aa0c45c78b4f4ef101bab9694e38c68db0 to < 9e69d683ebd7def04557fe758ff123105d7d9840affected4f2946aa0c45c78b4f4ef101bab9694e38c68db0 to < f8a2f2a4602318eb93d49d27fd0d0fdaab17eddeaffected4f2946aa0c45c78b4f4ef101bab9694e38c68db0 to < d62a84a78de5f29c642fa3bd4eee072ba7289cb4affected4f2946aa0c45c78b4f4ef101bab9694e38c68db0 to < 8861f6d5c0678a7c5089c7b272509fc5931b8437affected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.51 to ≤ 6.18.*unaffected7.2.5 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
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 ↗