CVE-2020-26139

NameCVE-2020-26139
DescriptionAn issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2689-1, DLA-2690-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)buster4.19.249-2fixed
buster (security)4.19.260-1fixed
bullseye5.10.140-1fixed
bullseye (security)5.10.149-2fixed
bookworm6.0.8-1fixed
sid6.0.10-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch4.9.272-1DLA-2689-1
linuxsourcebuster4.19.194-1
linuxsource(unstable)5.10.46-1
linux-4.19sourcestretch4.19.194-1~deb9u1DLA-2690-1

Notes

https://papers.mathyvanhoef.com/usenix2021.pdf
https://www.fragattacks.com/
https://lore.kernel.org/linux-wireless/20210511180259.159598-1-johannes@sipsolutions.net/
https://lore.kernel.org/linux-wireless/20210511200110.cb327ed0cabe.Ib7dcffa2a31f0913d660de65ba3c8aca75b1d10f@changeid/

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