CVE-2023-53220
media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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()")
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 15, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < c6763fefa267f6e62595a6ac1f57815d99fc90b7 caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < adcb73f8ce9aec48b1f85223f401c1574015d8d2 caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 991c77fe18c6f374bbf83376f8c42550aa565662 caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < a9def3e9718a4dc756f48db147d42ec41a966240 caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 5b1ea100ad3695025969dc4693f307877fb688d6 caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 6ab7ea4e17d6a605d05308adf8f3408924770cba caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < a1110f19d4940e4185251d072cbb0ff51486a1e7 caa1a700ed2a06a831e6a7db5d9f213fc63caee3 < 1047f9343011f2cedc73c64829686206a7e9fc3f
Linux / Linux
3.4
References
git.kernel.org: https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7 git.kernel.org: https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 git.kernel.org: https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662 git.kernel.org: https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 git.kernel.org: https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6 git.kernel.org: https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba git.kernel.org: https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7 git.kernel.org: https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f