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(parent: 56446f2) | patch
cifs: integer overflow in in SMB2_ioctl()
authorDan Carpenter <dan.carpenter@oracle.com>
Mon, 10 Sep 2018 11:12:07 +0000 (14:12 +0300)
committerSteve French <stfrench@microsoft.com>
Wed, 12 Sep 2018 14:32:07 +0000 (09:32 -0500)
commit2d204ee9d671327915260071c19350d84344e096
treed1ef8c358f51282c7fc382be90af5662872ac882tree | snapshot
parent56446f218af1133c802dad8e9e116f07f381846ccommit | diff
cifs: integer overflow in in SMB2_ioctl()

The "le32_to_cpu(rsp->OutputOffset) + *plen" addition can overflow and
wrap around to a smaller value which looks like it would lead to an
information leak.

Fixes: 4a72dafa19ba ("SMB2 FSCTL and IOCTL worker function")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
CC: Stable <stable@vger.kernel.org>
fs/cifs/smb2pdu.c diff | blob | history
Domain: System / Kernel;