From: Benoit Sevens bsevens@google.com

stable inclusion from stable-v6.6.61 commit 575a562f7a3ec2d54ff77ab6810e3fbceef2a91d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IB8G1D CVE: CVE-2024-53104

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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commit ecf2b43018da9579842c774b7f35dbe11b5c38dd upstream.

This can lead to out of bounds writes since frames of this type were not taken into account when calculating the size of the frames buffer in uvc_parse_streaming.

Fixes: c0efd232929c ("V4L/DVB (8145a): USB Video Class driver") Signed-off-by: Benoit Sevens bsevens@google.com Cc: stable@vger.kernel.org Acked-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Zeng Heng zengheng4@huawei.com --- drivers/media/usb/uvc/uvc_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 37d75bc97fd8..c19b75f2daf0 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -712,7 +712,7 @@ static int uvc_parse_streaming(struct uvc_device *dev, streaming->nformats = 0;

/* Parse the format descriptors. */ - while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { + while (ftype && buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { switch (buffer[2]) { case UVC_VS_FORMAT_UNCOMPRESSED: case UVC_VS_FORMAT_MJPEG: