diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-07-09 03:01:27 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 21:33:28 +0400 |
| commit | 026dadad6b44f0469a475efb4cae48269d8848bd (patch) | |
| tree | 7fbe73e69b0f806b34a7e4ac8fe80c445deb171f /drivers/char/mwave | |
| parent | 758a6ba39ef6df4cdc615e5edd7bd86eab81a5f7 (diff) | |
| download | linux-026dadad6b44f0469a475efb4cae48269d8848bd.tar.xz | |
mwave: fix info leak in mwave_ioctl()
Smatch complains that on 64 bit systems, there is a hole in the
MW_ABILITIES struct between ->component_count and ->component_list[].
It leaks stack information from the mwave_ioctl() function.
I've added a memset() to initialize the struct to zero.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Greg KH <greg@kroah.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/mwave')
| -rw-r--r-- | drivers/char/mwave/tp3780i.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/mwave/tp3780i.c b/drivers/char/mwave/tp3780i.c index c68969708068..04e6d6a27994 100644 --- a/drivers/char/mwave/tp3780i.c +++ b/drivers/char/mwave/tp3780i.c @@ -479,6 +479,7 @@ int tp3780I_QueryAbilities(THINKPAD_BD_DATA * pBDData, MW_ABILITIES * pAbilities PRINTK_2(TRACE_TP3780I, "tp3780i::tp3780I_QueryAbilities entry pBDData %p\n", pBDData); + memset(pAbilities, 0, sizeof(*pAbilities)); /* fill out standard constant fields */ pAbilities->instr_per_sec = pBDData->rDspSettings.uIps; pAbilities->data_size = pBDData->rDspSettings.uDStoreSize; |