PT-2026-61181 · Linux · Linux

CVE-2026-63864 · Published 2026-07-19 · Updated 2026-07-19

Mitre

CVSS v3.1

8.4

High

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Related Identifiers

CVE-2026-63864

Affected Products

Linux

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-63864 · Security Note
• https://git.kernel.org/stable/c/945816e63c8677cf4bfde963a0774432ce8afc85 · Note
• https://git.kernel.org/stable/c/6bd96e40f31dde8f8cd79772b4df0f171cf8a915 · Note