SEPTEMBER 19, 2026
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Case File

CVE-2026-64256

MEDIUM · CVSS 5.5 EPSS 0.15%

Source: NVD + CISA KEV + EPSS · Published 2026-07-25 · Last synced 2026-08-24

CyberRota Analysis

AI-Generated

The vulnerability affects the Linux kernel's XFS filesystem, specifically in the handling of quota IDs during iteration, where an unsigned 32-bit variable may wrap around and cause the iteration to restart incorrectly. This could lead to potential inconsistencies in quota management, impacting system resource allocation and stability. System administrators and developers using Linux with XFS should prioritize applying the patch to mitigate any risks associated with quota mismanagement.

CVE
CVE-2026-64256
Severity
MEDIUM
CVSS
5.5
EPSS
0.15%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: xfs: don't wrap around quota ids in dqiterate LOLLM noticed that q_id is an unsigned 32-bit variable. If it happens to be set to XFS_DQ_ID_MAX due to a filesystem that actually has a dquot for ID_MAX, then this addition will truncate to zero and the iteration starts over. Fix this by casting to u64.

Related CVEs

Other vulnerabilities affecting the same vendor(s)