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| author | Johan Hovold <johan@kernel.org> | 2021-10-26 11:55:11 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-12-07 11:29:53 +0100 |
| commit | 8aa637bf6d70d2fb2ad4d708d8b9dd02b1c095df (patch) | |
| tree | cc4aff579a56eed0474a4b7b8b9ced311d4e9b20 /tools/perf/scripts/python/net_dropmonitor.py | |
| parent | media: uvcvideo: Fix memory leak of object map on error exit path (diff) | |
| download | linux-8aa637bf6d70d2fb2ad4d708d8b9dd02b1c095df.tar.gz linux-8aa637bf6d70d2fb2ad4d708d8b9dd02b1c095df.zip | |
media: uvcvideo: fix division by zero at stream start
Add the missing bulk-endpoint max-packet sanity check to
uvc_video_start_transfer() to avoid division by zero in
uvc_alloc_urb_buffers() in case a malicious device has broken
descriptors (or when doing descriptor fuzz testing).
Note that USB core will reject URBs submitted for endpoints with zero
wMaxPacketSize but that drivers doing packet-size calculations still
need to handle this (cf. commit 2548288b4fb0 ("USB: Fix: Don't skip
endpoint descriptors with maxpacket=0")).
Fixes: c0efd232929c ("V4L/DVB (8145a): USB Video Class driver")
Cc: stable@vger.kernel.org # 2.6.26
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/net_dropmonitor.py')
0 files changed, 0 insertions, 0 deletions