# CVE-2023-54284: linux: In the Linux kernel, the following vulnerability has been resolved:  media: av7110: prevent underflow in write_ts_to_...

CVE-2023-54284 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54284, released December 30, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-54284
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 30, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  media: av7110: prevent underflow in write_ts_to_decoder()  The buf[4] value comes from the user via ts_play().  It is a value in the u8 range.  The final length we pass to av7110_ipack_instant_repack() is "len - (buf[4] + 1) - 4" so add a check to ensure that the length is not negative.  It's not clear that passing a negative len value does anything bad necessarily, but it's not best practice.  With the new bounds checking the "if (!len)" condition is no longer possible or required so remove that.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-54284](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54284.md) | Dec 30, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-54284](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54284.md) | Dec 30, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-54284](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54284.md) | Dec 30, 2025 |

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