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CVE-2025-71072

kernel: shmem: fix recovery on rename failures

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Severity

Low

Red Hat Product Security

2.5

CVSS 3.1

Review impact separately from score.

Published · January 13, 2026

Updated · August 12, 2026

Description

A flaw was found in the Linux kernel's shmem (tmpfs) filesystem rename operation. Under severe memory pressure, the maple_tree insertion used during file rename can fail, and the error recovery path does not properly handle this failure. This can leave the filesystem directory offset tree in an inconsistent state.

Statement

Triggering this vulnerability requires extreme memory exhaustion conditions during tmpfs rename operations. Normal system operation with adequate memory is unaffected. The filesystem inconsistency could cause subsequent directory operations to fail unexpectedly.

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 · 2.5
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE-390 · Detection of Error Condition Without Action