CVE-2022-50757

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> media: camss: Clean up received buffers on failed start of streaming<br /> <br /> It is required to return the received buffers, if streaming can not be<br /> started. For instance media_pipeline_start() may fail with EPIPE, if<br /> a link validation between entities is not passed, and in such a case<br /> a user gets a kernel warning:<br /> <br /> WARNING: CPU: 1 PID: 520 at drivers/media/common/videobuf2/videobuf2-core.c:1592 vb2_start_streaming+0xec/0x160<br /> <br /> Call trace:<br /> vb2_start_streaming+0xec/0x160<br /> vb2_core_streamon+0x9c/0x1a0<br /> vb2_ioctl_streamon+0x68/0xbc<br /> v4l_streamon+0x30/0x3c<br /> __video_do_ioctl+0x184/0x3e0<br /> video_usercopy+0x37c/0x7b0<br /> video_ioctl2+0x24/0x40<br /> v4l2_ioctl+0x4c/0x70<br /> <br /> The fix is to correct the error path in video_start_streaming() of camss.