VULNERABILITY

Debian: CVE-2022-49934: linux -- security update

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Debian: CVE-2022-49934: linux -- security update

Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:C)
Published
06/20/2025
Created
06/21/2025
Added
06/20/2025
Modified
06/20/2025

Description

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().

Solution(s)

  • debian-upgrade-linux

References

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