CVE-2026-68462

Summary of CVE-2026-68462 (Linux kernel, BPF): The issue arises in the verifier’s handling of buffer-pointer access (PTR_TO_TP_BUFFER and PTR_TO_BUF) where a constant negative offset could slip through after a pointer offset split (reg->var_off vs reg->off). Specifically, an access with reg...

CVE-2026-68462: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative const offsets for buffer pointers The verifier rejects variable offsets for PTRTOTPBUFFER and PTRTOBUF accesses, but it currently accepts a constant negative offset produced by pointer arithmetic. Commit...

CVE-2026-43333: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: bpf: reject direct access to nullable PTRTOBUF pointers checkmemaccess matches PTRTOBUF via basetype which strips PTRMAYBENULL, allowing direct dereference without a null check. Map iterator ctx-key and ctx-value are PTRTOBUF |...