CVE-2026-89701
Last modified
CVE-2026-89701 is a vulnerability of currently unknown severity. 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.
Description
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).
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 6ae30d6eb26bce02c48c60074b4306270e2434c1, < 7e7b93da7fa2e77f977096251899d1410986adf6; >= 6ae30d6eb26bce02c48c60074b4306270e2434c1, < 5eb489831a9fd4754f4baf26e6989efb66ce104c; >= 6ae30d6eb26bce02c48c60074b4306270e2434c1, < 0f4a767340fad392bd656115b8752005518c9065 |
| Linux | Linux | 6.14 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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