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CVE-2026-89989

ima: Check for ERR_PTR from dentry_path() in validate_hash_algo()

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.

Timeline

  1. ID reserved

    By Linux

  2. · 5 days later

    Published

  3. · 33 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.

EPSS (exploitation in 30 days)
0.21% · top 89% of all CVEs (12 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 – < d6fade89903c8fd0af6c956242aec8b927040e02
    • affected 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 – < 0de5b525c0cd7d202848b8adfde3c01c287fb1a6
    • affected 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 – < 30b5c0e17dcad72b6b2f987319aa645570e6376d
    • affected 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 – < 9e69d683ebd7def04557fe758ff123105d7d9840
    • affected 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 – < f8a2f2a4602318eb93d49d27fd0d0fdaab17edde
    • affected 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 – < d62a84a78de5f29c642fa3bd4eee072ba7289cb4
    • affected 4f2946aa0c45c78b4f4ef101bab9694e38c68db0 – < 8861f6d5c0678a7c5089c7b272509fc5931b8437
  • Linux · Linux

    • affected 5.15
    • unaffected < 5.15
    • unaffected 5.15.221 – ≤ 5.15.*
    • unaffected 6.1.188 – ≤ 6.1.*
    • unaffected 6.6.157 – ≤ 6.6.*
    • unaffected 6.12.110 – ≤ 6.12.*
    • unaffected 6.18.51 – ≤ 6.18.*
    • unaffected 7.2.5 – ≤ 7.2.*
    • unaffected 7.3 – ≤ *

References

References7

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .