diff options
| author | J. Bruce Fields <bfields@redhat.com> | 2013-03-26 14:11:13 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-05 10:16:51 -0700 |
| commit | 7e36f505caf7882b6cc89ecedcd7f26749ef917a (patch) | |
| tree | 653d14c0ec447d960773f2056923c7f0c3fc6eaf | |
| parent | 582b4c3dc62284aec367a3f4f74ce8101303e9c4 (diff) | |
nfsd4: reject "negative" acl lengths
commit 64a817cfbded8674f345d1117b117f942a351a69 upstream.
Since we only enforce an upper bound, not a lower bound, a "negative"
length can get through here.
The symptom seen was a warning when we attempt to a kmalloc with an
excessive size.
Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index ecdd18ab356..59ac3f41cc9 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -262,7 +262,7 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, iattr->ia_valid |= ATTR_SIZE; } if (bmval[0] & FATTR4_WORD0_ACL) { - int nace; + u32 nace; struct nfs4_ace *ace; READ_BUF(4); len += 4; |