CVE-2024-27050 (GCVE-0-2024-27050)

Vulnerability from cvelistv5 – Published: 2024-05-01 12:54 – Updated: 2025-05-04 09:03
VLAI?
Title
libbpf: Use OPTS_SET() macro in bpf_xdp_query()
Summary
In the Linux kernel, the following vulnerability has been resolved: libbpf: Use OPTS_SET() macro in bpf_xdp_query() When the feature_flags and xdp_zc_max_segs fields were added to the libbpf bpf_xdp_query_opts, the code writing them did not use the OPTS_SET() macro. This causes libbpf to write to those fields unconditionally, which means that programs compiled against an older version of libbpf (with a smaller size of the bpf_xdp_query_opts struct) will have its stack corrupted by libbpf writing out of bounds. The patch adding the feature_flags field has an early bail out if the feature_flags field is not part of the opts struct (via the OPTS_HAS) macro, but the patch adding xdp_zc_max_segs does not. For consistency, this fix just changes the assignments to both fields to use the OPTS_SET() macro.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 , < fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c (git)
Affected: 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 , < 682ddd62abd4bdcee7584246903e7a2df005fe0d (git)
Affected: 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 , < cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e (git)
Affected: 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 , < 92a871ab9fa59a74d013bc04f321026a057618e7 (git)
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    Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.