checkpath in OpenRC before 0.44.7 uses the direct output of strlen() to allocate strings, which does not account for the '\0' byte at the end of the string. This results in memory corruption. CVE-2021-42341 was introduced in git commit 63db2d99e730547339d1bdd28e8437999c380cae, which was introduced as part of OpenRC 0.44.0 development.

checkpath in OpenRC through 0.42.1 might allow local users to take ownership of arbitrary files because a non-terminal path component can be a symlink.

OpenRC opentmpfiles through 0.1.3, when the fs.protected_hardlinks sysctl is turned off, allows local users to obtain ownership of arbitrary files by creating a hard link inside a directory on which "chown -R" will be run.

The Gentoo net-misc/vde package before version 2.3.2-r4 may allow members of the "qemu" group to gain root privileges by creating a hard link in a directory on which "chown" is called recursively by the OpenRC service script.