CVE-2022-49957

Medium

In the Linux kernel, the following vulnerability has been resolved: kcm: fix strp_init() order and cleanup strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work. And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check. This also makes a lockdep warning reported by syzbot go away.

Package Linux Kernel
Published 2025-06-18
Last modified 2025-11-14
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-908

CVE-2022-49957 is classified as CWE-908

See CWE-908 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 4.14.22, 4.9.84, 4.9.100, 4.15 and later are affected. Fixed in 4.14.293, 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8, 6.0 and their respective stable series.

Affected from
≥ 4.14.22 ≥ 4.9.84 ≥ 4.9.100 ≥ 4.15
Fixed in
✓ 4.14.293 4.14.x ✓ 4.19.258 4.19.x ✓ 5.4.213 5.4.x ✓ 5.10.142 5.10.x ✓ 5.15.66 5.15.x ✓ 5.19.8 5.19.x ✓ 6.0

References

The following references provide additional information about CVE-2022-49957 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

7 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2022-49957?

    CVE-2022-49957 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.14.22 onward and has been patched in 4.14.293, 4.19.258, 5.4.213 and others. CVE-2022-49957 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2022-49957?

    CVE-2022-49957 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2022-49957?

    Yes — CVE-2022-49957 has been patched. Fixed versions include 4.14.293, 4.19.258, 5.4.213 and others. If you are running Linux kernel 4.14.22 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2022-49957 actively exploited?

    No — CVE-2022-49957 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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