CVE-2021-0342

NameCVE-2021-0342
DescriptionIn tun_get_user of tun.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges required. User interaction is not required for exploitation. Product: Android; Versions: Android kernel; Android ID: A-146554327.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1fixed
stretch (security)4.9.246-2fixed
buster4.19.160-2fixed
buster (security)4.19.152-1fixed
bullseye5.10.4-1fixed
sid5.10.5-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch(not affected)
linuxsourcebuster4.19.131-1
linuxsource(unstable)5.7.6-1

Notes

[stretch] - linux <not-affected> (Vulnerable code introduced later)
https://git.kernel.org/linus/96aa1b22bd6bb9fccf62f6261f390ed6f3e7967f

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