[lkml]   [2013]   [Jun]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[patch] cciss: 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.

Signed-off-by: Dan Carpenter <>

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 6374dc1..34971aa 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -1201,6 +1201,7 @@ 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,

 \ /
  Last update: 2013-06-03 12:02    [W:0.044 / U:3.916 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site