critical9.8
CVE-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…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.4 before 5.4.128 from 5.5 before 5.10.46 from 5.11 before 5.12.13 Version 5.13 |
Weakness classification
References
- NVD record
- CVE.org record
- 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
- https://git.kernel.org/stable/c/2030043e616cab40f510299f09b636285e0a3678
- https://git.kernel.org/stable/c/22cba878abf646cd3a02ee7c8c2cef7afe66a256
- https://git.kernel.org/stable/c/509ab6bfdd0c76daebbad0f0af07da712116de22