A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

GENTOO:GLSA-202210-22 | URL:https://security.gentoo.org/glsa/202210-22 | MISC:https://access.redhat.com/security/cve/CVE-2021-35938 | URL:https://access.redhat.com/security/cve/CVE-2021-35938 | MISC:https://bugzilla.redhat.com/show_bug.cgi?id=1964114 | URL:https://bugzilla.redhat.com/show_bug.cgi?id=1964114 | MISC:https://bugzilla.suse.com/show_bug.cgi?id=1157880 | URL:https://bugzilla.suse.com/show_bug.cgi?id=1157880 | MISC:https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033 | URL:https://github.com/rpm-software-management/rpm/commit/25a435e90844ea98fe5eb7bef22c1aecf3a9c033 | MISC:https://github.com/rpm-software-management/rpm/pull/1919 | URL:https://github.com/rpm-software-management/rpm/pull/1919 | MISC:https://rpm.org/wiki/Releases/4.18.0 | URL:https://rpm.org/wiki/Releases/4.18.0