Tracker / CVE-2022-49934
CVE-2022-49934
High 8.8
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Fix UAF in ieee80211_scan_rx() ieee80211_scan_rx() tries to access scan_req->flags after a null check, but a UAF is observed when the scan is completed and __ieee80211_scan_completed() executes, which then calls cfg80211_scan_done() leading to the freeing of scan_req. Since scan_req is rcu_dereference()'d, prevent the racing in __ieee80211_scan_completed() by ensuring that from mac80211's POV it is no longer accessed from an RCU read critical section before we call cfg80211_scan_done().
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 3.19 → 4.9.330 |
| linux | linux_kernel · 4.10 → 4.14.295 |
| linux | linux_kernel · 4.15 → 4.19.260 |
| linux | linux_kernel · 4.20 → 5.4.215 |
| 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.