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Vulnerabilities CVE-2021-47232

CVE-2021-47232

Critical
Open
TLP:CLEAR

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

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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.

Details

CVSS Score
9.8
EPSS Score
0.62%

46.3th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
May 21, 2024
Last Modified
Aug 5, 2026
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