| commit | 369ff955a8497988d079c4e3fa1e93c2570c1c69 | |
| author | Prasad J Pandit <pjp@fedoraproject.org> | |
| Thu, 14 May 2020 20:06:08 +0000 (15 01:36 +0530) | ||
| committer | Gerd Hoffmann <kraxel@redhat.com> | |
| Mon, 25 May 2020 09:30:03 +0000 (25 11:30 +0200) | ||
| tree | a02079395fdc2abbbc3caf94645e902ea31c9153 | treesnapshot (tar.gz zip) |
| parent | fea8f3ed739536fca027cf56af7f5576f37ef9cd | commitdiff |
es1370: check total frame count against current frame
A guest user may set channel frame count via es1370_write()
such that, in es1370_transfer_audio(), total frame count
'size' is lesser than the number of frames that are processed
'cnt'.
int cnt = d->frame_cnt >> 16;
int size = d->frame_cnt & 0xffff;
if (size < cnt), it results in incorrect calculations leading
to OOB access issue(s). Add check to avoid it.
Reported-by: Ren Ding <rding@gatech.edu>
Reported-by: Hanqing Zhao <hanqing@gatech.edu>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 20200514200608.1744203-1-ppandit@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
A guest user may set channel frame count via es1370_write()
such that, in es1370_transfer_audio(), total frame count
'size' is lesser than the number of frames that are processed
'cnt'.
int cnt = d->frame_cnt >> 16;
int size = d->frame_cnt & 0xffff;
if (size < cnt), it results in incorrect calculations leading
to OOB access issue(s). Add check to avoid it.
Reported-by: Ren Ding <rding@gatech.edu>
Reported-by: Hanqing Zhao <hanqing@gatech.edu>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 20200514200608.1744203-1-ppandit@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| hw/audio/es1370.c | diffblobblamehistory |