CVE-2023-54093

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> media: anysee: fix null-ptr-deref in anysee_master_xfer<br /> <br /> In anysee_master_xfer, msg is controlled by user. When msg[i].buf<br /> is null and msg[i].len is zero, former checks on msg[i].buf would be<br /> passed. Malicious data finally reach anysee_master_xfer. If accessing<br /> msg[i].buf[0] without sanity check, null ptr deref would happen.<br /> We add check on msg[i].len to prevent crash.<br /> <br /> Similar commit:<br /> commit 0ed554fd769a<br /> ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")<br /> <br /> [hverkuil: add spaces around +]