CVE-2021-47339

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-core: explicitly clear ioctl input data As seen from a recent syzbot bug report, mistakes in the compat ioctl implementation can lead to uninitialized kernel stack data getting used as input for driver ioctl handlers. The reported bug is now fixed, but it's possible that other related bugs are still present or get added in the future. As the drivers need to check user input already, the possible impact is fairly low, but it might still cause an information leak. To be on the safe side, always clear the entire ioctl buffer before calling the conversion handler functions that are meant to initialize them.

The following products are affected by CVE-2021-47339 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47339.

URL	Resource
https://git.kernel.org/stable/c/7b53cca764f9b291b7907fcd39d9e66ad728ee0b
https://git.kernel.org/stable/c/bfb48b54db25c3b4ef4bef5e0691464ebc4aa335
https://git.kernel.org/stable/c/dc02c0b2bd6096f2f3ce63e1fc317aeda05f74d8
https://lore.kernel.org/linux-cve-announce/2024052137-CVE-2021-47339-6d3e@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47339
https://www.cve.org/CVERecord?id=CVE-2021-47339