USN-8661-5: Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu patches Raspberry Pi Linux kernel flaws, including Wi-Fi mesh packet injection CVE-2025-27558.
Ubuntu USN-8661-5 patches multiple Linux kernel vulnerabilities in Raspberry Pi kernel packages. CVE-2025-27558 is an incomplete fix for CVE-2020-24588: the Wi-Fi stack mishandles aggregated frames in mesh networks, letting a physically nearby attacker inject packets. The update also covers flaws in x86, InfiniBand, network and NVMe drivers, ext4, SMB, IPv4, traffic control, TCP, and kernel locking. Ubuntu says an attacker could possibly use the issues to compromise a system.
- USN-8661-5 updates the Raspberry Pi Linux kernel.
- CVE-2025-27558 allows physically proximate Wi-Fi mesh packet injection.
- Additional kernel subsystem flaws could let an attacker compromise the system.
- Vendors
- Canonical
- Products
- UbuntuLinux kernel
- Organizations
- Canonical
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2020-24588 | The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the… | 3.5 | 4% | PoC | |
| CVE-2025-27558 | IEEE P802.11-REVme D1.1 through D7.0 allows FragAttacks against mesh networks | 9.1 | <1% |
From the original article
Siebe Devroe, Héloïse Gollier, and Mathy Vanhoef discovered that the WiFi implementation in the Linux kernel did not properly handle aggregated frames in mesh networks, due to an incorrect fix for CVE-2020-24588. A physically proximate attacker could use this issue to inject packets. (CVE-2025-27558) Several security issues were discovered in the Linux kernel.
ubuntu.com
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