CVE-2022-49934

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.0:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.0:rc3::::::

History

No history.

Information

Published : 2025-06-18 11:15

Updated : 2025-11-14 20:24

NVD link : CVE-2022-49934

Mitre link : CVE-2022-49934

CVE.ORG link : CVE-2022-49934

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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