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authorDan Carpenter <dan.carpenter@oracle.com>2013-09-24 15:27:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-24 17:00:26 -0700
commit58f09e00ae095e46ef9edfcf3a5fd9ccdfad065e (patch)
treeb3420bf07c846d71a4d38802177d2d0b215b6f14
parent627aad1c01da6f881e7f98d71fd928ca0c316b1a (diff)
cciss: fix info leak in cciss_ioctl32_passthru()
The arg64 struct has a hole after ->buf_size which isn't cleared. Or if any of the calls to copy_from_user() fail then that would cause an information leak as well. This was assigned CVE-2013-2147. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/block/cciss.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index d2d95ff5353b..edfa2515bc86 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -1189,6 +1189,7 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
int err;
u32 cp;
+ memset(&arg64, 0, sizeof(arg64));
err = 0;
err |=
copy_from_user(&arg64.LUN_info, &arg32->LUN_info,