Security Advisory
CVE-2026-63864
8.4
HIGH
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
bpf: Propagate error from visit_tailcall_insn
Commit e40f5a6bf88a ("bpf: correct stack liveness for tail calls") added
visit_tailcall_insn() but did not check its return value.
Published Date
July 19, 2026
Official Source
NIST NVD Advisory