ima: Check for ERR_PTR from dentry_path() in validate_hash_algo()
Published Sep 16, 2026
No CVSS score
EPSS 0.21%
Description
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
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- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
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- Version 5.15StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<5.15
- Version 5.15.221StatusunaffectedConstraints<=5.15.*
- Version 6.1.188StatusunaffectedConstraints<=6.1.*
- Version 6.12.110StatusunaffectedConstraints<=6.12.*
- Version 6.18.51StatusunaffectedConstraints<=6.18.*
- Version 6.6.157StatusunaffectedConstraints<=6.6.*
- Version 7.2.5StatusunaffectedConstraints<=7.2.*
- Version 7.3-rc2StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
No CWE recorded.
References (7)
- https://git.kernel.org/stable/c/0de5b525c0cd7d202848b8adfde3c01c287fb1a6
- https://git.kernel.org/stable/c/30b5c0e17dcad72b6b2f987319aa645570e6376d
- https://git.kernel.org/stable/c/8861f6d5c0678a7c5089c7b272509fc5931b8437
- https://git.kernel.org/stable/c/9e69d683ebd7def04557fe758ff123105d7d9840
- https://git.kernel.org/stable/c/d62a84a78de5f29c642fa3bd4eee072ba7289cb4
- https://git.kernel.org/stable/c/d6fade89903c8fd0af6c956242aec8b927040e02
- https://git.kernel.org/stable/c/f8a2f2a4602318eb93d49d27fd0d0fdaab17edde
Change history (0)
No recorded changes yet.