CVE-2023-54145 (GCVE-0-2023-54145)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2026-01-05 10:34
VLAI?
Title
bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log It's trivial for user to trigger "verifier log line truncated" warning, as verifier has a fixed-sized buffer of 1024 bytes (as of now), and there are at least two pieces of user-provided information that can be output through this buffer, and both can be arbitrarily sized by user: - BTF names; - BTF.ext source code lines strings. Verifier log buffer should be properly sized for typical verifier state output. But it's sort-of expected that this buffer won't be long enough in some circumstances. So let's drop the check. In any case code will work correctly, at worst truncating a part of a single line output.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a2a7d5701052542cd2260e7659b12443e0a74733 , < 40c88c429a598006f91ad7a2b89856cd50b3a008 (git)
Affected: a2a7d5701052542cd2260e7659b12443e0a74733 , < 926a175026fed5d534f587ea4ec3ec49265cd3c5 (git)
Affected: a2a7d5701052542cd2260e7659b12443e0a74733 , < cff36398bd4c7d322d424433db437f3c3391c491 (git)
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    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 6.1.107 , ≤ 6.1.* (semver)
Unaffected: 6.4.7 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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