Critical · published July 29, 2024
In the Linux kernel, the following vulnerability has been resolved:
ila: block BH in ila_output()
As explained in commit 1378817486d6 ("tipc: block BH
before using dst_cache"), net/core/dst_cache.c
helpers need to be called with BH disabled.
ila_output() is called from lwtunnel_output()
possibly from process context, and under rcu_read_lock().
We might be interrupted by a softirq, re-enter ila_output()
and corrupt dst_cache data structures.
Fix the race by using local_bh_disable().
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.10, < 4.19.319 | 4.19.319 |
| linux/linux_kernel | ≥ 4.20, < 5.4.281 | 5.4.281 |
| linux/linux_kernel | ≥ 5.5, < 5.10.223 | 5.10.223 |
| linux/linux_kernel | ≥ 5.11, < 5.15.164 | 5.15.164 |
| linux/linux_kernel | ≥ 5.16, < 6.1.101 | 6.1.101 |
| linux/linux_kernel | ≥ 6.2, < 6.6.42 | 6.6.42 |
| linux/linux_kernel | ≥ 6.7, < 6.9.11 | 6.9.11 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |