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| author | Jeff Layton <jlayton@kernel.org> | 2026-06-11 16:00:50 -0400 |
|---|---|---|
| committer | Chuck Lever <cel@kernel.org> | 2026-08-10 09:54:35 -0400 |
| commit | 0f4a767340fad392bd656115b8752005518c9065 (patch) | |
| tree | 62dc4bff9b5b717ca97b0e5cd0e1062733f2ea2f /tools/lib/python | |
| parent | 04cce9d79f2b1a114f7128e08bf60a473e10f1ec (diff) | |
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).
Fixes: 6ae30d6eb26b ("nfsd: add support for delegated timestamps")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260611-nfsd-testing-v2-7-5b90e276f2d9@kernel.org
Signed-off-by: Chuck Lever <cel@kernel.org>
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions