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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-01T12:54:35.555Z

Updated: 2024-08-02T00:21:05.913Z

Reserved: 2024-02-19T14:20:24.213Z

Link: CVE-2024-27050

cve-icon Vulnrichment

Updated: 2024-05-16T18:25:15.576Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-01T13:15:50.070

Modified: 2024-07-03T01:50:17.020

Link: CVE-2024-27050

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-05-01T00:00:00Z

Links: CVE-2024-27050 - Bugzilla