# CVE-2026-80751: linux: In the Linux kernel, the following vulnerability has been resolved:  pmdomain: mediatek: mfg: initialize prev_o in mt...

CVE-2026-80751 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80751 (version 7.1.10-1), released September 4, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-80751
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 3, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  pmdomain: mediatek: mfg: initialize prev_o in mtk_mfg_attach_dev()  mtk_mfg_attach_dev() reads prev_o on the first iteration of its loop, in "if (prev_o && prev_o->freq == o->freq)", before prev_o is assigned at the end of the loop body. On that first iteration, evaluating prev_o reads an indeterminate value. If it is non-NULL, the condition dereferences a stale or invalid pointer, potentially faulting or incorrectly skipping the first OPP.  Initialize prev_o to NULL. This matches the intent as well: there is no previous OPP to compare against on the first iteration.  Found with Clang's -Wconditional-uninitialized.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.1.10-1 | [DEBIAN-CVE-2026-80751](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80751.md) | Sep 4, 2026 |

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Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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