Critical · published May 21, 2024
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.4, < 5.4.128 | 5.4.128 |
| linux/linux_kernel | ≥ 5.5, < 5.10.46 | 5.10.46 |
| linux/linux_kernel | ≥ 5.11, < 5.12.13 | 5.12.13 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |