CVE-2026-50259

The CVE-2026-50259 entry describes a stack-based buffer overflow in X.Org X server and Xwayland. The vulnerability centers on XkbSetMapChecks(), which declares a fixed-size buffer mapWidths[256] on the stack and is indexed by key type. CheckKeyTypes() writes to this buffer at a client-controlled ...

kernel: eBPF verification flaw

A vulnerability was found in Linux Kernel, where a type confusion problem in checkmapfunccompatibility may lead to free arbitrary kernel memory...