CVE-2026-90157: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative optlen in cgroup getsockopt hook A cgroup getsockopt BPF program can shrink ctx->optlen after the kernel getsockopt handler has run. The kernel-buffer variant, used by TCP_ZEROCOPY_RECEIVE, only rejects values larger than the original length. If BPF writes a negative optlen, that value is accepted and propagated back to the TCP getsockopt code. It can then be passed to copy_to_sockptr() as a size_t and trigger the hardened usercopy bytes > INT_MAX warning. Reject negative ctx.optlen in __cgroup_bpf_run_filter_getsockopt_kern(), matching the lower-bound validation already present in the sockptr-based getsockopt hook.

Засегнати продукти

• Linux Linux: 08f61a34913558e06576e7b6318bf583f273c1be преди 5b09d984b38b018b123c3a9e02a96bbc6468dbe5; 9cacf81f8161111db25f98e78a7a0e32ae142b3f преди 554ba7195c4108726450e24480c8449990c2268c; 9cacf81f8161111db25f98e78a7a0e32ae142b3f преди d02a12b4085ffe41ea750b1007f7a9c7aee2875a; 9cacf81f8161111db25f98e78a7a0e32ae142b3f преди e6fbf0eba87f50084d67508898f6ad6fc7ff1ba2; 9cacf81f8161111db25f98e78a7a0e32ae142b3f преди f68671b1a98d426c57864bd457c125fee14ac1a5; 9cacf81f8161111db25f98e78a7a0e32ae142b3f преди 2bdbe00454200fcb0110f31eeca8d906a3515e74; 9cacf81f8161111db25f98e78a7a0e32ae142b3f преди 31a89af4f513d750fec196e2bb6195a7d4473e9f; 9cacf81f8161111db25f98e78a7a0e32ae142b3f преди 1b5aacd5b2419b0790e955e466d389a61c79b4b1; 5.10.188 преди 5.10.270
• Linux Linux: 5.12; преди 5.12; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-90157
• https://nvd.nist.gov/vuln/detail/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