---
cve: "CVE-2026-64256"
severity: "LOW"
cvss: 3.1
epss: "0.2%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-07-25 10:17:04"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T12:20:01+02:00"
---

# CVE-2026-64256

> 3.1 LOW

## Beschreibung

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.

## Patch verfügbar (OSV)

- Kernel ≥ 6.12.96
- Kernel ≥ 6.18.39
- Kernel ≥ 7.1.4

## Referenzen

- <https://git.kernel.org/stable/c/249e311c2ba392ceaf9ebfc145a46922946f069a>
- <https://git.kernel.org/stable/c/d1c4c40599c376aeb0c93068a2ae344e79ee4b90>
- <https://git.kernel.org/stable/c/2b14fe1e0924c6b901f4256456342569c5397abe>
- <https://git.kernel.org/stable/c/d766e4e5e85d829629c3ba503802fe1303d7b591>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64256) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_