UNKNOWN NVD
CVE-2026-89701
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
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).
References
- https://git.kernel.org/stable/c/0f4a767340fad392bd656115b8752005518c9065
- https://git.kernel.org/stable/c/5eb489831a9fd4754f4baf26e6989efb66ce104c
- https://git.kernel.org/stable/c/7e7b93da7fa2e77f977096251899d1410986adf6
This unknown severity vulnerability was published on 2026-09-11 via NVD.
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