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Acknowledged

LIN1024-1311 : Security Advisory - linux - CVE-2021-47232

Created: May 21, 2024 Updated: Jan 7, 2026

Resolved Date: May 22, 2024

Found In Version: 10.24.33.1

Severity: Standard

Applicable for: Wind River Linux LTS 24

Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:

can: j1939: fix Use-after-Free, hold skb ref while in use

This patch fixes a Use-after-Free found by the syzbot.

The problem is that a skb is taken from the per-session skb queue,
without incrementing the ref count. This leads to a Use-after-Free if
the skb is taken concurrently from the session queue due to a CTS.

CREATE(Triage):(User=admin) CVE-2021-47232 (https://nvd.nist.gov/vuln/detail/CVE-2021-47232)