CVE-2026-45899 | ext4: drop extent cache when splitting extent fails

In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when splitting extent fails When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent status tree. So drop all of the remaining potentially stale extents if the splitting fails.

Published: 2026-05-27 Last update: 2026-05-27 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD Status：Awaiting Analysis，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-45899 is rated Low Risk (7.4/100): low exploitation likelihood (EPSS 0.02%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-45899

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-28 — 0.02% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-45899

CVSS metrics for this CVE.

No CVSS data in dataset for this CVE.

Weakness enumeration for CVE-2026-45899

GitHub Security Advisory for CVE-2026-45899

GHSA-fm97-7qpp-598c · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when...

OS Trackers for CVE-2026-45899

vendor priority summary link
debian not yet assigned CVE-2026-45899 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2026-45899
redhat medium — https://access.redhat.com/security/cve/CVE-2026-45899
suse — — https://www.suse.com/security/cve/CVE-2026-45899/
ubuntu medium CVE-2026-45899 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 891 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 508, needs-triage 224, ignored 159. https://ubuntu.com/security/CVE-2026-45899

Affected software / configurations for CVE-2026-45899

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-45899

cvelogic Threat Intelligence