# CVE-2022-48987: linux: In the Linux kernel, the following vulnerability has been resolved:  media: v4l2-dv-timings.c: fix too strict blankin...

CVE-2022-48987 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48987, released October 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48987
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  media: v4l2-dv-timings.c: fix too strict blanking sanity checks  Sanity checks were added to verify the v4l2_bt_timings blanking fields in order to avoid integer overflows when userspace passes weird values.  But that assumed that userspace would correctly fill in the front porch, backporch and sync values, but sometimes all you know is the total blanking, which is then assigned to just one of these fields.  And that can fail with these checks.  So instead set a maximum for the total horizontal and vertical blanking and check that each field remains below that.  That is still sufficient to avoid integer overflows, but it also allows for more flexibility in how userspace fills in these fields.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-48987](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48987.md) | Oct 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-48987](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48987.md) | Oct 21, 2024 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-48987](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48987.md) | Oct 21, 2024 |

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