CVE-2026-63864

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.

References

• https://git.kernel.org/stable/c/6bd96e40f31dde8f8cd79772b4df0f171cf8a915
• https://git.kernel.org/stable/c/945816e63c8677cf4bfde963a0774432ce8afc85