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CVE-2026-45899

kernel: ext4: drop extent cache when splitting extent fails

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · June 27, 2026

Description

A flaw was found in the Linux kernel, specifically within the ext4 filesystem's extent cache management. When an operation to split an extent fails, the system may not properly clear all related entries, leading to stale extent entries remaining in the extent status tree. This can result in data integrity issues or potential system instability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-459 · Incomplete Cleanup