Tracker / CVE-2022-49957
CVE-2022-49957
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: kcm: fix strp_init() order and cleanup strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work. And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check. This also makes a lockdep warning reported by syzbot go away.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.14.22 → 4.14.293 |
| linux | linux_kernel · 4.14.41 → 4.15 |
| linux | linux_kernel · 4.15.1 → 4.19.258 |
| linux | linux_kernel · 4.20 → 5.4.213 |
| linux | linux_kernel · 4.9.100 → 4.10 |
| linux | linux_kernel · 4.9.84 → 4.10 |
| linux | linux_kernel · 5.11 → 5.15.66 |
| linux | linux_kernel · 5.16 → 5.19.8 |
| linux | linux_kernel · 5.5 → 5.10.142 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.