Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 before fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c; affected 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 before 682ddd62abd4bdcee7584246903e7a2df005fe0d; affected 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 before cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e; affected 13ce2daa259a3bfbc9a5aeeee8b9a87058703731 before 92a871ab9fa59a74d013bc04f321026a057618e7 |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 6.6.23 through 6.6.*; unaffected 6.7.11 through 6.7.*; unaffected 6.8.2 through 6.8.*; unaffected 6.9 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c
- https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0d
- https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e
- https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.