A flaw was found in the VirGL virtual OpenGL renderer (virglrenderer). The virgl did not properly initialize memory when allocating a host-backed memory resource. A malicious guest could use this flaw to mmap from the guest kernel and read this uninitialized memory from the host, possibly leading to information disclosure.
https://security.gentoo.org/glsa/202210-05
https://security-tracker.debian.org/tracker/CVE-2022-0175
https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/654
https://gitlab.freedesktop.org/virgl/virglrenderer/-/commit/b05bb61f454eeb8a85164c8a31510aeb9d79129c