EUVD-2026-81750

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 TCPZEROCOPYRECEIVE, only rejects values...

CVE-2026-90157

CVE-2026-90157 affects the Linux kernel BPF cgroup getsockopt hook. A cgroup getsockopt BPF program can shrink ctx->optlen after the kernel getsockopt handler runs. The kernel-buffer variant (used by TCP_ZEROCOPY_RECEIVE ) only rejects values larger than the original length, so a negative optl...