CVE-2023-53220

In the Linux kernel, the following vulnerability has been resolved: media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() In az6007_i2c_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach az6007_i2c_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

• linux linux kernel (< 4.14.326) • linux linux kernel (>= 4.15 < 4.19.295) • linux linux kernel (>= 4.20 < 5.4.257) • linux linux kernel (>= 5.5 < 5.10.197) • linux linux kernel (>= 5.11 < 5.15.133) • linux linux kernel (>= 5.16 < 6.1.55) • linux linux kernel (>= 6.2 < 6.5.5)