CVE-2026-72428

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stack slot index in nospec checks checkstackwritefixedoff computes the byte slot for a fixed-offset stack write as -off - 1, and records each written byte in slottype with slot - i % BPFREGSIZE. The Spectre v4 sanitizati...

CVE-2026-72428

Summary: This CVE concerns the Linux kernel’s BPF Spectre v4 sanitization logic. The root cause is in check_stack_write_fixed_off(), which computes the byte slot incorrectly (-off - 1) and records writes in slot_type[] using (slot - i) % BPF_REG_SIZE. The sanitization pre-check used slot_type[i],...