diff options
Diffstat (limited to 'sys/fs/nfsserver')
| -rw-r--r-- | sys/fs/nfsserver/nfs_nfsdserv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/fs/nfsserver/nfs_nfsdserv.c b/sys/fs/nfsserver/nfs_nfsdserv.c index 6f3447f26620..67af0cf71175 100644 --- a/sys/fs/nfsserver/nfs_nfsdserv.c +++ b/sys/fs/nfsserver/nfs_nfsdserv.c @@ -5138,6 +5138,11 @@ nfsrvd_layoutcommit(struct nfsrv_descript *nd, __unused int isdgram, NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); layouttype = fxdr_unsigned(int, *tl++); maxcnt = fxdr_unsigned(int, *tl); + /* There is no limit in the RFC, so use 1000 as a sanity limit. */ + if (maxcnt < 0 || maxcnt > 1000) { + error = NFSERR_BADXDR; + goto nfsmout; + } if (maxcnt > 0) { layp = malloc(maxcnt + 1, M_TEMP, M_WAITOK); error = nfsrv_mtostr(nd, layp, maxcnt); |