ring-buffer: Add checking nr_subbufs to persistent ring buffer validation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98057
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 11:17:34 UTC
Updated2026-09-30 14:10:59 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ring-buffer: Add checking nr_subbufs to persistent ring buffer validation Sashiko reported that the code was using meta->nr_subbufs without making sure that it matched the nr_pages + 1 on data that was assuming the two were the same. Add a check to the persistent ring buffer validation code to make sure that the saved nr_subbufs matches what we expect.

Risk And Classification

EPSS: 0.001660000 probability, percentile 0.051900000 (date 2026-09-27)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3ec743d558f111d8999aea24577ba66c65ee2eeb f0467190e6a9fc61e343c8064ef16aad513788c3 git Not specified
CNA Linux Linux affected f5b95f1fa2ef3a03f49eeec658ba97e721412b32 69d502457e3f76142f7fcf6e2625e80e0ce8a60f git Not specified
CNA Linux Linux affected f5b95f1fa2ef3a03f49eeec658ba97e721412b32 6c001a62c34f13fe1c6a24304c289b387d9e697d git Not specified
CNA Linux Linux affected 0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf git Not specified
CNA Linux Linux affected 6.12.16 6.12.111 semver Not specified
CNA Linux Linux affected 6.13.4 6.14 semver Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report