CVE-2024-27050
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.28% probability · 21th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0dPatch
- https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7Patch
- https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5ePatch
- https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07cPatch
- https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0dPatch
- https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7Patch
- https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5ePatch
- https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07cPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.