CVE-2026-46256

kernel: NFS/localio: prevent direct reclaim recursion into NFS via nfs_writepages

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · June 3, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel, specifically within the NFS (Network File System) LOCALIO optimization. This vulnerability allows for a recursion deadlock to occur during direct reclaim operations. When LOCALIO attempts to write pages back into NFS via nfs_writepages, it can lead to a system deadlock, resulting in a Denial of Service (DoS).

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-833 · Deadlock