Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6ae30d6eb26bce02c48c60074b4306270e2434c1 before 7e7b93da7fa2e77f977096251899d1410986adf6; affected 6ae30d6eb26bce02c48c60074b4306270e2434c1 before 5eb489831a9fd4754f4baf26e6989efb66ce104c; affected 6ae30d6eb26bce02c48c60074b4306270e2434c1 before 0f4a767340fad392bd656115b8752005518c9065 |
| Linux / Linux | affected 6.14; unaffected 0 before 6.14; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.