CVE-2025-22026

Medium

In the Linux kernel, the following vulnerability has been resolved: nfsd: don't ignore the return code of svc_proc_register() Currently, nfsd_proc_stat_init() ignores the return value of svc_proc_register(). If the procfile creation fails, then the kernel will WARN when it tries to remove the entry later. Fix nfsd_proc_stat_init() to return the same type of pointer as svc_proc_register(), and fix up nfsd_net_init() to check that and fail the nfsd_net construction if it occurs. svc_proc_register() can fail if the dentry can't be allocated, or if an identical dentry already exists. The second case is pretty unlikely in the nfsd_net construction codepath, so if this happens, return -ENOMEM.

Package Linux Kernel
Published 2025-04-16
Last modified 2026-04-06
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-252

CVE-2025-22026 is classified as CWE-252

See CWE-252 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.1.106, 6.6.47, 5.10.226, 5.15.166, 6.8.10, 6.9 and later are affected. Fixed in 6.1.164, 6.6.125, 6.12.24, 6.13.12, 6.14.2, 6.15 and their respective stable series.

Affected from
≥ 6.1.106 ≥ 6.6.47 ≥ 5.10.226 ≥ 5.15.166 ≥ 6.8.10 ≥ 6.9
Fixed in
✓ 6.1.164 6.1.x ✓ 6.6.125 6.6.x ✓ 6.12.24 6.12.x ✓ 6.13.12 6.13.x ✓ 6.14.2 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-22026 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

6 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2025-22026?

    CVE-2025-22026 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.1.106 onward and has been patched in 6.1.164, 6.6.125, 6.12.24 and others. CVE-2025-22026 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2025-22026?

    CVE-2025-22026 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-2025-22026?

    Yes — CVE-2025-22026 has been patched. Fixed versions include 6.1.164, 6.6.125, 6.12.24 and others. If you are running Linux kernel 6.1.106 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2025-22026 actively exploited?

    No — CVE-2025-22026 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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