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()")
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before c6763fefa267f6e62595a6ac1f57815d99fc90b7
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before adcb73f8ce9aec48b1f85223f401c1574015d8d2
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 991c77fe18c6f374bbf83376f8c42550aa565662
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before a9def3e9718a4dc756f48db147d42ec41a966240
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 5b1ea100ad3695025969dc4693f307877fb688d6
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 6ab7ea4e17d6a605d05308adf8f3408924770cba
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before a1110f19d4940e4185251d072cbb0ff51486a1e7
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 1047f9343011f2cedc73c64829686206a7e9fc3f
4.14.326 (semver)
4.19.295 (semver)
5.4.257 (semver)
5.10.197 (semver)
5.15.133 (semver)
6.1.55 (semver)
6.5.5 (semver)
6.6 (original_commit_for_fix)
References
git.kernel.org/...c/c6763fefa267f6e62595a6ac1f57815d99fc90b7
git.kernel.org/...c/adcb73f8ce9aec48b1f85223f401c1574015d8d2
git.kernel.org/...c/991c77fe18c6f374bbf83376f8c42550aa565662
git.kernel.org/...c/a9def3e9718a4dc756f48db147d42ec41a966240
git.kernel.org/...c/5b1ea100ad3695025969dc4693f307877fb688d6
git.kernel.org/...c/6ab7ea4e17d6a605d05308adf8f3408924770cba
git.kernel.org/...c/a1110f19d4940e4185251d072cbb0ff51486a1e7
git.kernel.org/...c/1047f9343011f2cedc73c64829686206a7e9fc3f
