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CVE-2026-53395

kernel: nfsd: fix dead ACL conflict guard in nfsd4_create

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · July 19, 2026

Updated · October 13, 2026

Description

A flaw was found in the Linux kernel's Network File System (NFS) daemon (nfsd). A remote attacker can exploit this vulnerability by sending specially crafted NFS CREATE requests that include conflicting Access Control List (ACL) attributes. This leads to a memory leak, where the system fails to release memory objects, causing unbounded memory exhaustion. Repeated exploitation can result in a Denial of Service (DoS), making the system unresponsive to legitimate requests.

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-772 · Missing Release of Resource after Effective Lifetime