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| author | Steve French <sfrench@us.ibm.com> | 2007-11-13 22:41:37 +0000 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2007-11-13 22:41:37 +0000 |
| commit | 133672efbc1085f9af990bdc145e1822ea93bcf3 (patch) | |
| tree | b93b5ba3a9559d137fe7fb86f6d1a3d33189ce0b /fs/cifs/cifsproto.h | |
| parent | 9418d5dc9ba40b88737580457bf3b7c63c60ec43 (diff) | |
| download | lwn-133672efbc1085f9af990bdc145e1822ea93bcf3.tar.gz lwn-133672efbc1085f9af990bdc145e1822ea93bcf3.zip | |
[CIFS] Fix buffer overflow if server sends corrupt response to small
request
In SendReceive() function in transport.c - it memcpy's
message payload into a buffer passed via out_buf param. The function
assumes that all buffers are of size (CIFSMaxBufSize +
MAX_CIFS_HDR_SIZE) , unfortunately it is also called with smaller
(MAX_CIFS_SMALL_BUFFER_SIZE) buffers. There are eight callers
(SMB worker functions) which are primarily affected by this change:
TreeDisconnect, uLogoff, Close, findClose, SetFileSize, SetFileTimes,
Lock and PosixLock
CC: Dave Kleikamp <shaggy@austin.ibm.com>
CC: Przemyslaw Wegrzyn <czajnik@czajsoft.pl>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifsproto.h')
| -rw-r--r-- | fs/cifs/cifsproto.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index dd1d7c200ee6..0c55dff2add8 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -48,10 +48,11 @@ extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *, struct smb_hdr * /* input */ , struct smb_hdr * /* out */ , int * /* bytes returned */ , const int long_op); +extern int SendReceiveNoRsp(const unsigned int xid, struct cifsSesInfo *ses, + struct smb_hdr *in_buf, int flags); extern int SendReceive2(const unsigned int /* xid */ , struct cifsSesInfo *, struct kvec *, int /* nvec to send */, - int * /* type of buf returned */ , const int long_op, - const int logError /* whether to log status code*/ ); + int * /* type of buf returned */ , const int flags); extern int SendReceiveBlockingLock(const unsigned int /* xid */ , struct cifsTconInfo *, struct smb_hdr * /* input */ , |