What is CVE-2022-49639?

CVE-2022-49639 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Race Condition flaw (CWE-362), affecting Linux kernel versions from 2.6.19 onward and patched in 4.9.324, 4.14.289, 4.19.253 and others. CVE-2022-49639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49639?

CVE-2022-49639 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-49639?

Yes, CVE-2022-49639 has been patched. Fixed versions include 4.9.324, 4.14.289, 4.19.253 and others. If you are running Linux kernel 2.6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49639 actively exploited?

CVE-2022-49639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2022-49639

Medium

In the Linux kernel, the following vulnerability has been resolved: cipso: Fix data-races around sysctl. While reading cipso sysctl variables, they can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-01

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-362

CVE-2022-49639 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.19 and later are affected. Fixed in 4.9.324, 4.14.289, 4.19.253, 5.4.207, 5.10.132, 5.15.56, 5.18.13, 5.19 and their respective stable series.

Affected from

≥ 2.6.19

Fixed in

✓ 4.9.324 4.9.x ✓ 4.14.289 4.14.x ✓ 4.19.253 4.19.x ✓ 5.4.207 5.4.x ✓ 5.10.132 5.10.x ✓ 5.15.56 5.15.x ✓ 5.18.13 5.18.x ✓ 5.19

References

8 total

Kernel Git
https://git.kernel.org/stable/c/07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148

Patch
Kernel Git
https://git.kernel.org/stable/c/0e41a0f73ccb9be112a80bde3804a771633caaef

Patch
Kernel Git
https://git.kernel.org/stable/c/2764f82bbc158d106693ae3ced3675cf4b963b35

Patch
Kernel Git
https://git.kernel.org/stable/c/59e26906b89cc35bb54476498772b45cbc32323f

Patch
Kernel Git
https://git.kernel.org/stable/c/c321e99d2725d11f7e6a4ebd9ce752259f0bae81

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2022-49639

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49639?

CVE-2022-49639 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 2.6.19 onward and has been patched in 4.9.324, 4.14.289, 4.19.253 and others. CVE-2022-49639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49639?

CVE-2022-49639 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-49639?

Yes. CVE-2022-49639 has been patched. Fixed versions include 4.9.324, 4.14.289, 4.19.253 and others. If you are running Linux kernel 2.6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49639 actively exploited?

No. CVE-2022-49639 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.