CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2026-63814: f2fs: validate ACL entry sizes in f2fs_acl_from_disk()

criticalCVSS 9.8CVE-2026-63814

CSIRTS triage

vendor: Linuxproduct: f2fsOther
What
ACL entry sizes are not validated in f2fs_acl_from_disk().
Who is affected
Deployments using f2fs are affected.
Urgency
Remediation is necessary to prevent potential security issues related to ACL handling.
Action
Update to the latest version to mitigate the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch f2fs

Get an email when a new f2fs advisory drops — max one per day, one-click unsubscribe.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
critical — CVSS 9.8
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63814

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-63814coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

More from Microsoft Security Response Center