CVE-2022-49934

HIGH EPSS 5.0%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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().

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥3.19  –  <4.9.330
linuxlinux_kernel*≥4.10  –  <4.14.295
linuxlinux_kernel*≥4.15  –  <4.19.260
linuxlinux_kernel*≥4.20  –  <5.4.215
linuxlinux_kernel*≥5.5  –  <5.10.142
linuxlinux_kernel*≥5.11  –  <5.15.66
linuxlinux_kernel*≥5.16  –  <5.19.8
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/4abc8c07a065ecf771827bde3c63fbbe4aa0c08b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5d20c6f932f2758078d0454729129c894fe353e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/60deb9f10eec5c6a20252ed36238b55d8b614a2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6eb181a64fdabf10be9e54de728876667da20255
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/78a07732fbb0934d14827d8f09b9aa6a49ee1aa9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c0445feb80a4d0854898118fa01073701f8d356b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e0ff39448cea654843744c72c6780293c5082cb1
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4abc8c07a065ecf771827bde3c63fbbe4aa0c08b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5d20c6f932f2758078d0454729129c894fe353e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/60deb9f10eec5c6a20252ed36238b55d8b614a2c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6eb181a64fdabf10be9e54de728876667da20255
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/78a07732fbb0934d14827d8f09b9aa6a49ee1aa9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ad48cbf8b07f10c1e4a7a262b32a9179ae9dd2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c0445feb80a4d0854898118fa01073701f8d356b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e0ff39448cea654843744c72c6780293c5082cb1
    Patch