CVE-2026-64256

CVE CVE-2026-64256EUVD EUVD-2026-48968Published 2026-07-25T08:49:08.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 6.8; 21d7500929c8a0b10e22a6755850c6f9a9280284 <d766e4e5e85d829629c3ba503802fe1303d7b591; patch: 6.18.39; patch: 7.1.4; 21d7500929c8a0b10e22a6755850c6f9a9280284 <249e311c2ba392ceaf9ebfc145a46922946f069a; 21d7500929c8a0b10e22a6755850c6f9a9280284 <2b14fe1e0924c6b901f4256456342569c5397abe; 21d7500929c8a0b10e22a6755850c6f9a9280284 <d1c4c40599c376aeb0c93068a2ae344e79ee4b90; patch: 7.2-rc4; patch: 0; patch: 6.12.96

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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