Description
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()")
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
caa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < c6763fefa267f6e62595a6ac1f57815d99fc90b7affectedcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < adcb73f8ce9aec48b1f85223f401c1574015d8d2affectedcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < 991c77fe18c6f374bbf83376f8c42550aa565662affectedcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < a9def3e9718a4dc756f48db147d42ec41a966240affectedcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < 5b1ea100ad3695025969dc4693f307877fb688d6affectedcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < 6ab7ea4e17d6a605d05308adf8f3408924770cbaaffectedcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < a1110f19d4940e4185251d072cbb0ff51486a1e7affectedcaa1a700ed2a06a831e6a7db5d9f213fc63caee3 to < 1047f9343011f2cedc73c64829686206a7e9fc3faffected
Linux Linux
Default version status: affected
3.4affected0 to < 3.4unaffected4.14.326 to ≤ 4.14.*unaffected4.19.295 to ≤ 4.19.*unaffected5.4.257 to ≤ 5.4.*unaffected5.10.197 to ≤ 5.10.*unaffected5.15.133 to ≤ 5.15.*unaffected6.1.55 to ≤ 6.1.*unaffected6.5.5 to ≤ 6.5.*unaffected6.6 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7 ↗
- https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2 ↗
- https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662 ↗
- https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240 ↗
- https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6 ↗
- https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba ↗
- https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7 ↗
- https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f ↗