CVE-2026-89701

CVE CVE-2026-89701EUVD EUVD-2026-76613Published 2026-09-11T19:46:18.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: nfsd: validate nseconds in TIME_DELEG decode paths The xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms store a raw uint32_t nseconds directly into tv_nsec without enforcing nseconds < NSEC_PER_SEC. The legacy nfsd4_decode_nfstime4 has this check but the TIME_DELEG paths do not. A malformed timespec can propagate through notify_change() to disk. Add range checks in both nfs4xdr.c (SETATTR path) and nfs4callback.c (CB_GETATTR path).

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 6ae30d6eb26bce02c48c60074b4306270e2434c1 <7e7b93da7fa2e77f977096251899d1410986adf6; patch: 0; 6.14; patch: 7.2.4; patch: 6.18.50; 6ae30d6eb26bce02c48c60074b4306270e2434c1 <5eb489831a9fd4754f4baf26e6989efb66ce104c; patch: 7.3-rc1; 6ae30d6eb26bce02c48c60074b4306270e2434c1 <0f4a767340fad392bd656115b8752005518c9065

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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