CVE-2021-47232
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Linux Kernel
PublishedMay 21, 2024
First seenMay 21, 2024
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel5.4.128, 5.10.46, 5.12.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.4 ≤ v < 5.4.128, 5.5 ≤ v < 5.10.46, 5.11 ≤ v < 5.12.13, 5.13 | 5.4.128, 5.10.46, 5.12.13 |
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