CVE-2026-89701
- Source
- https://cve.org/CVERecord?id=CVE-2026-89701
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89701.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-89701
- Downstream
- Published
- 2026-09-11T19:46:18Z
- Modified
- 2026-09-13T03:47:20Z
- Summary
- nfsd: validate nseconds in TIME_DELEG decode paths
- Details
-
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).
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89701.json" }- References
-
- https://git.kernel.org/stable/c/0f4a767340fad392bd656115b8752005518c9065
- https://git.kernel.org/stable/c/5eb489831a9fd4754f4baf26e6989efb66ce104c
- https://git.kernel.org/stable/c/7e7b93da7fa2e77f977096251899d1410986adf6
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89701.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-89701
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git