{"timestamp":"2024-09-10T15:38:53.466154Z","id":"CVE-2021-47339","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/media/v4l2-core/v4l2-ioctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"8dbcc3fa387c16abfc88a628cf528c439c91b332","lessThan":"dc02c0b2bd6096f2f3ce63e1fc317aeda05f74d8","versionType":"git","status":"affected"},{"version":"8dbcc3fa387c16abfc88a628cf528c439c91b332","lessThan":"bfb48b54db25c3b4ef4bef5e0691464ebc4aa335","versionType":"git","status":"affected"},{"version":"8dbcc3fa387c16abfc88a628cf528c439c91b332","lessThan":"7b53cca764f9b291b7907fcd39d9e66ad728ee0b","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/media/v4l2-core/v4l2-ioctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.11","status":"affected"},{"version":"0","lessThan":"5.11","versionType":"semver","status":"unaffected"},{"version":"5.12.18","lessThanOrEqual":"5.12.*","versionType":"semver","status":"unaffected"},{"version":"5.13.3","lessThanOrEqual":"5.13.*","versionType":"semver","status":"unaffected"},{"version":"5.14","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-908

OR
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.13 from (excluding) 5.13.3
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (excluding) 5.12.18

CVE: https://git.kernel.org/stable/c/7b53cca764f9b291b7907fcd39d9e66ad728ee0b Types: Patch

CVE: https://git.kernel.org/stable/c/bfb48b54db25c3b4ef4bef5e0691464ebc4aa335 Types: Patch

CVE: https://git.kernel.org/stable/c/dc02c0b2bd6096f2f3ce63e1fc317aeda05f74d8 Types: Patch

kernel.org: https://git.kernel.org/stable/c/7b53cca764f9b291b7907fcd39d9e66ad728ee0b Types: Patch

kernel.org: https://git.kernel.org/stable/c/bfb48b54db25c3b4ef4bef5e0691464ebc4aa335 Types: Patch

kernel.org: https://git.kernel.org/stable/c/dc02c0b2bd6096f2f3ce63e1fc317aeda05f74d8 Types: Patch

https://git.kernel.org/stable/c/7b53cca764f9b291b7907fcd39d9e66ad728ee0b

https://git.kernel.org/stable/c/bfb48b54db25c3b4ef4bef5e0691464ebc4aa335

https://git.kernel.org/stable/c/dc02c0b2bd6096f2f3ce63e1fc317aeda05f74d8

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.

kernel.org https://git.kernel.org/stable/c/7b53cca764f9b291b7907fcd39d9e66ad728ee0b [No types assigned]

kernel.org https://git.kernel.org/stable/c/bfb48b54db25c3b4ef4bef5e0691464ebc4aa335 [No types assigned]

kernel.org https://git.kernel.org/stable/c/dc02c0b2bd6096f2f3ce63e1fc317aeda05f74d8 [No types assigned]