bpf: Reject negative optlen in cgroup getsockopt hook

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-90157 · Microsoft / collected KEV context

cve-program · CVE-2026-90157

• https://git.kernel.org/stable/c/5b09d984b38b018b123c3a9e02a96bbc6468dbe5
• https://git.kernel.org/stable/c/554ba7195c4108726450e24480c8449990c2268c
• https://git.kernel.org/stable/c/d02a12b4085ffe41ea750b1007f7a9c7aee2875a
• https://git.kernel.org/stable/c/e6fbf0eba87f50084d67508898f6ad6fc7ff1ba2
• https://git.kernel.org/stable/c/f68671b1a98d426c57864bd457c125fee14ac1a5
• https://git.kernel.org/stable/c/2bdbe00454200fcb0110f31eeca8d906a3515e74
• https://git.kernel.org/stable/c/31a89af4f513d750fec196e2bb6195a7d4473e9f
• https://git.kernel.org/stable/c/1b5aacd5b2419b0790e955e466d389a61c79b4b1

No related operational record is retained in the current change model.