CVE-2026-64256

unknowncovered by 1 sourcefirst seen 2026-07-25

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.

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Exploitation outlook

Low exploitation risk0.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2026-64256: In the Linux kernel, the following vulnerability has been resolved: xfs: don't wrap around quo…nvd · 2026-07-25

External references

NVD record for CVE-2026-64256

CVE.org record

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