What is CVE-2022-49934?

CVE-2022-49934 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 3.19 onward and patched in 4.9.330, 4.14.295, 4.19.260 and others. CVE-2022-49934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49934?

CVE-2022-49934 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2022-49934?

Yes, CVE-2022-49934 has been patched. Fixed versions include 4.9.330, 4.14.295, 4.19.260 and others. If you are running Linux kernel 3.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49934 actively exploited?

CVE-2022-49934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2022-49934

High

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().

Package Linux Kernel

Published 2025-06-18

Last modified 2025-11-14

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-416

CVE-2022-49934 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 3.19 and later are affected. Fixed in 4.9.330, 4.14.295, 4.19.260, 5.4.215, 5.10.142, 5.15.66, 5.19.8, 6.0 and their respective stable series.

Affected from

≥ 3.19

Fixed in

✓ 4.9.330 4.9.x ✓ 4.14.295 4.14.x ✓ 4.19.260 4.19.x ✓ 5.4.215 5.4.x ✓ 5.10.142 5.10.x ✓ 5.15.66 5.15.x ✓ 5.19.8 5.19.x ✓ 6.0

References

8 total

Kernel Git
https://git.kernel.org/stable/c/4abc8c07a065ecf771827bde3c63fbbe4aa0c08b

Patch
Kernel Git
https://git.kernel.org/stable/c/5d20c6f932f2758078d0454729129c894fe353e7

Patch
Kernel Git
https://git.kernel.org/stable/c/60deb9f10eec5c6a20252ed36238b55d8b614a2c

Patch
Kernel Git
https://git.kernel.org/stable/c/6eb181a64fdabf10be9e54de728876667da20255

Patch
Kernel Git
https://git.kernel.org/stable/c/78a07732fbb0934d14827d8f09b9aa6a49ee1aa9

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2022-49934

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-06-18

Modified 2025-11-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49934?

CVE-2022-49934 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 3.19 onward and has been patched in 4.9.330, 4.14.295, 4.19.260 and others. CVE-2022-49934 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49934?

CVE-2022-49934 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2022-49934?

Yes. CVE-2022-49934 has been patched. Fixed versions include 4.9.330, 4.14.295, 4.19.260 and others. If you are running Linux kernel 3.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49934 actively exploited?

No. CVE-2022-49934 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.