# CVE-2025-27558: linux: IEEE P802.11-REVme D1.1 through D7.0 allows FragAttacks against mesh networks

CVE-2025-27558 is fixed in linux on 1 platform, first by DEBIAN-CVE-2025-27558, released May 21, 2025. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2025-27558
- Priority: Urgent
- CVSS: 9.1 (critical)
- EPSS: 0.0031
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 21, 2025

## Description

IEEE P802.11-REVme D1.1 through D7.0 allows FragAttacks against mesh networks. In mesh networks using Wi-Fi Protected Access (WPA, WPA2, or WPA3) or Wired Equivalent Privacy (WEP), an adversary can exploit this vulnerability to inject arbitrary frames towards devices that support receiving non-SSP A-MSDU frames. NOTE: this issue exists because of an incorrect fix for CVE-2020-24588. P802.11-REVme, as of early 2025, is a planned release of the 802.11 standard.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.147-1 | [DEBIAN-CVE-2025-27558](https://patchblox.com/security/data/fix/linux/debian-cve-2025-27558.md) | May 21, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.12.41-1 | [DEBIAN-CVE-2025-27558](https://patchblox.com/security/data/fix/linux/debian-cve-2025-27558.md) | May 21, 2025 |
| Linux | linux Debian 14 | 6.16.3-1 | [DEBIAN-CVE-2025-27558](https://patchblox.com/security/data/fix/linux/debian-cve-2025-27558.md) | May 21, 2025 |

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Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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