CVE-2026-43321 HIGH

CVE-2026-43321: bpf: Properly mark live registers for indirect jumps

Vendor Linux
Product Linux
Published May 8, 2026
Last update May 11, 2026

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Properly mark live registers for indirect jumps For a `gotox rX` instruction the rX register should be marked as used in the compute_insn_live_regs() function. Fix this.

Key dates

02Disclosure timeline

May 8, 2026 CVE published
May 11, 2026 Record updated