What is CVE-2022-49291?

CVE-2022-49291 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 2.6.12 onward and patched in 4.14.279, 4.19.243, 5.4.193 and others. CVE-2022-49291 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49291?

CVE-2022-49291 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-2022-49291?

Yes, CVE-2022-49291 has been patched. Fixed versions include 4.14.279, 4.19.243, 5.4.193 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49291 actively exploited?

CVE-2022-49291 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-2022-49291

High

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent hw_params and hw_free calls Currently we have neither proper check nor protection against the concurrent calls of PCM hw_params and hw_free ioctls, which may result in a UAF. Since the existing PCM stream lock can't be used for protecting the whole ioctl operations, we need a new mutex to protect those racy calls. This patch introduced a new mutex, runtime->buffer_mutex, and applies it to both hw_params and hw_free ioctl code paths. Along with it, the both functions are slightly modified (the mmap_count check is moved into the state-check block) for code simplicity.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-03-25

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-2022-49291 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 2.6.12 and later are affected. Fixed in 4.14.279, 4.19.243, 5.4.193, 5.10.109, 5.15.32, 5.16.18, 5.17.1, 5.18 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 4.14.279 4.14.x ✓ 4.19.243 4.19.x ✓ 5.4.193 5.4.x ✓ 5.10.109 5.10.x ✓ 5.15.32 5.15.x ✓ 5.16.18 5.16.x ✓ 5.17.1 5.17.x ✓ 5.18

References

8 total

Kernel Git
https://git.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8

Patch
Kernel Git
https://git.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8

Patch
Kernel Git
https://git.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7b

Patch
Kernel Git
https://git.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438

Patch
Kernel Git
https://git.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cb

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2022-49291

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-03-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49291?

CVE-2022-49291 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 2.6.12 onward and has been patched in 4.14.279, 4.19.243, 5.4.193 and others. CVE-2022-49291 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49291?

CVE-2022-49291 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-2022-49291?

Yes. CVE-2022-49291 has been patched. Fixed versions include 4.14.279, 4.19.243, 5.4.193 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49291 actively exploited?

No. CVE-2022-49291 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.