| commit | b534a83f55a6c4ca6ad9e54148df9b94e1c46010 | |
| author | Dan Rosenberg <drosenberg@vsecurity.com> | |
| Wed, 15 Sep 2010 21:44:22 +0000 (15 18:44 -0300) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 21 Mar 2011 19:44:17 +0000 (21 12:44 -0700) | ||
| tree | 0b70601005f3a0ef50b175331a6e726ba9e006ad | treesnapshot (tar.gz zip) |
| parent | e3485e7d76a3c1b0cab50c8a804bccc577842598 | commitdiff |
V4L/DVB: ivtvfb: prevent reading uninitialized stack memory
commit 405707985594169cfd0b1d97d29fcb4b4c6f2ac9 upstream.
The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16
bytes of uninitialized stack memory, because the "reserved" member of
the fb_vblank struct declared on the stack is not altered or zeroed
before being copied back to the user. This patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 405707985594169cfd0b1d97d29fcb4b4c6f2ac9 upstream.
The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16
bytes of uninitialized stack memory, because the "reserved" member of
the fb_vblank struct declared on the stack is not altered or zeroed
before being copied back to the user. This patch takes care of it.
Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/media/video/ivtv/ivtvfb.c | diffblobblamehistory |