# CVE-2025-40066: linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: mt76: mt7996: Check phy before init msta_l...

CVE-2025-40066 is fixed in linux on 1 platform by DEBIAN-CVE-2025-40066 (version 6.17.6-1), released October 28, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-40066
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 28, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  wifi: mt76: mt7996: Check phy before init msta_link in mt7996_mac_sta_add_links()  In order to avoid a possible NULL pointer dereference in mt7996_mac_sta_init_link routine, move the phy pointer check before running mt7996_mac_sta_init_link() in mt7996_mac_sta_add_links routine.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.17.6-1 | [DEBIAN-CVE-2025-40066](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40066.md) | Oct 28, 2025 |

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