Updated: 2026-02-27 02:09:34.517334
Description:
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 5.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| CentOS 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Ignored | 2025-03-11 00:54:32 | Ignored due to low severity | |
| CentOS 7 ELS | kernel | 3.10.0 | 5.5 | MEDIUM | Ignored | 2025-11-05 04:57:11 | CVE-2021-47339 is confined to the Video4Linux2 32-bit compat-ioctl path and is only reachable by a l... | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Ignored | 2025-03-11 00:54:31 | Ignored due to low severity | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 5.5 | MEDIUM | Ignored | 2025-03-11 00:54:30 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 5.5 | MEDIUM | Ignored | 2025-03-11 02:53:03 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 5.5 | MEDIUM | Ignored | 2025-03-10 22:54:02 | Ignored due to low severity |