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()")

The following products are affected by CVE-2023-53220 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2023-53220.

URL	Resource
https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f
https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6
https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba
https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662
https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7
https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240
https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2
https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7
https://lore.kernel.org/linux-cve-announce/2025091512-CVE-2023-53220-e514@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-53220
https://www.cve.org/CVERecord?id=CVE-2023-53220