A NULL pointer dereference in vrend_renderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service via malformed commands.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-18388
• https://access.redhat.com/security/cve/cve-2019-18388
• https://bugzilla.redhat.com/show_bug.cgi?id=1765578
• https://gitlab.freedesktop.org/virgl/virglrenderer/commit/0d9a2c88dc3a70023541b3260b9f00c982abda16
• https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=d2cdbcf6a8f2317f250fd54f08aa35dde2fa3e30#diff-content-3cd772559e0d73afa136d6818023cfd0c4c8ecc0
• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00028.html
• https://lists.debian.org/debian-lts-announce/2022/12/msg00017.html