CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-47232
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.
Severity
- EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
- CWE
- CWE-416
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- https://git.kernel.org/stable/c/1071065eeb33d32b7d98c2ce7591881ae7381705
- https://git.kernel.org/stable/c/2030043e616cab40f510299f09b636285e0a3678
- https://git.kernel.org/stable/c/22cba878abf646cd3a02ee7c8c2cef7afe66a256
- https://git.kernel.org/stable/c/509ab6bfdd0c76daebbad0f0af07da712116de22
- https://git.kernel.org/stable/c/1071065eeb33d32b7d98c2ce7591881ae7381705