Descriptionrunc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs922050, 922169

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lxc (PTS)buster1:3.1.0+really3.0.3-8fixed
buster (security)1:3.1.0+really3.0.3-8+deb10u1fixed
sid, trixie, bookworm1:5.0.2-1fixed
runc (PTS)buster1.0.0~rc6+dfsg1-3fixed
buster (security)1.0.0~rc6+dfsg1-3+deb10u2fixed
sid, trixie, bookworm1.1.5+ds1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs

runc: Fixed by:
lxc: Fixed by:
Not considered a security issue by LXC upstream

Search for package or bug name: Reporting problems