CVE-2026-74544

The CVE-2026-74544 issue is in the Linux kernel net/sched cls_u32 implementation. u32_change() copies offshift (unsigned char, 0-255) without bounds checks, enabling undefined behavior (shift-out-of-bounds) in u32_classify() when TC_U32_VAROFFSET is set and offshift ≥ 32. Public sources (Linux ke...