CVE-2025-22026

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2025-04-16. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
9.1%
KEV
Not listed

Published

April 16, 2025

Last Modified

June 19, 2026

Advisory Details (8)

Auto-updated Jun 19, 2026
No patch confirmed yet.
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e4316bd85e42b01125b2aab691769234a388b8a3
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e31957a819e60cf0bc9a49408765e6095fd3d046
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9d9456185fd5f1891c74354ee297f19538141ead
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/930b64ca0c511521f0abdd1d57ce52b2a6e3476b
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6a59b70fe71ec66c0dd19e2c279c71846a3fb2f0
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/51da899c209a9624e48be416bd30e7ed5cd6c3d8
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/51107e768de6821b68aa34a136d07bc7a09cf6c3
generic

nfsd: don't ignore the return code of svc_proc_register() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/30405b23b4d5e2a596fb756d48119d7293194e75

Vendor Advisories for CVE-2025-22026(12)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-05-21ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-05-21ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1023.24) @ noble2026-05-21ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-100.100.1) @ noble2026-05-21ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1046.52+fips1) @ noble2026-05-21ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-22.22) @ plucky2026-05-21ubuntu
ubuntulinux-tools-oracle-64k (6.14.0-1007.7) @ plucky2026-05-21ubuntu
ubuntulinux-tools-azure (6.14.0-1007.7) @ plucky2026-05-21ubuntu
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-05-21ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-05-21ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1041.42~22.04.1) @ jammy2026-05-21ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-05-21ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-05-21ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1043.44) @ noble2026-05-21ubuntu
ubuntulinux-tools-ibm-lts-24.04 (6.8.0-1044.44) @ noble2026-05-21ubuntu
redhatkernel-0:4.18.0-305.179.1.el8_42025-12-04redhat
redhatkernel-0:4.18.0-193.173.1.el8_22025-11-18redhat
redhatkernel-rt-0:3.10.0-1160.142.1.rt56.1294.el72025-11-12redhat
redhatkernel-0:3.10.0-1160.142.1.el72025-11-12redhat
redhatkernel-0:4.18.0-372.166.1.el8_62025-10-29redhat
redhatkernel-0:4.18.0-477.116.1.el8_82025-10-22redhat
redhatkernel-0:5.14.0-570.55.1.el9_62025-10-20redhat
redhatkernel-0:6.12.0-55.38.1.el10_02025-10-07redhat
redhatkernel-rt-0:4.18.0-553.77.1.rt7.418.el8_102025-09-29redhat
redhatkernel-0:4.18.0-553.77.1.el8_102025-09-29redhat
redhatkernel-rt-0:5.14.0-70.144.1.rt21.216.el9_02025-08-27redhat
redhatkernel-0:5.14.0-70.144.1.el9_02025-08-27redhat
redhatkernel-rt-0:5.14.0-284.131.1.rt14.416.el9_22025-08-18redhat
redhatkernel-0:5.14.0-284.131.1.el9_22025-08-18redhat
redhatkernel-0:5.14.0-427.83.1.el9_42025-08-18redhat
linuxKernel @ 5.10.259—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(14)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 129 total refreshes for this CVE.

  1. 2026-07-23 02:50 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
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  23. 2026-07-10 14:22 UTCOSV refresh
  24. 2026-07-09 19:09 UTCEPSS rescore
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  1. 2026-07-07 13:45 UTCEPSS rescore
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  25. 2026-06-21 23:12 UTCOSV refresh
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  32. 2026-06-19 15:13 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  33. 2026-06-18 17:52 UTCEPSS rescore
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  39. 2026-06-14 23:18 UTCMITRE cvelistV5
  40. 2026-06-14 23:17 UTCEPSS rescore
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Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2025-22026?
CVE-2025-22026 is a medium vulnerability published on April 16, 2025. In the Linux kernel, the following vulnerability has been resolved: nfsd: don't ignore the return code of svcprocregister() Currently, nfsdprocstat_init() ignores the return value of svcprocregister(). If the procfile creation fails, then the kernel will WARN when it tries to remove the entry…
When was CVE-2025-22026 disclosed?
CVE-2025-22026 was first published in the National Vulnerability Database on April 16, 2025, with the most recent update on June 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-22026 actively exploited?
CVE-2025-22026 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-22026?
CVE-2025-22026 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-22026?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-22026, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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