CVE-2022-38096 Linux CVE debrief

Who should care

Linux system administrators, distro maintainers, virtualization and desktop platform owners, and incident responders should care most, especially where multi-user access is allowed and kernel updates are centrally managed.

Technical summary

The official NVD metadata ties CVE-2022-38096 to CWE-476 (NULL Pointer Dereference) and lists the vulnerable CPE as linux_kernel with versionStartIncluding 4.20. The supplied description places the flaw in the vmwgfx driver path under drivers/gpu/vmxgfx/vmxgfx_execbuf.c and says a local attacker with a user account can trigger the issue. The source metadata also links official/public references from OpenAnolis Bugzilla, Debian LTS, and Siemens ProductCERT, but no fixed version is provided in the supplied corpus.

Defensive priority

Medium. Prioritize this as a routine but important kernel patching item for systems running affected Linux kernels, especially fleets that allow local user access and depend on stable kernel availability.

Recommended defensive actions

• Inventory Linux systems running kernel versions at or above 4.20 and compare them against your distribution's backport status.
• Apply vendor kernel updates that include the vmwgfx fix; use distro security notices or vendor advisories to confirm the patched build.
• Restrict unnecessary local account access and review multi-user exposure, since the NVD vector requires local privileges and user interaction.
• Monitor for kernel crashes, oops messages, or unexpected reboots that mention vmwgfx or vmxgfx_execbuf paths.
• After patching, validate that the updated kernel boots and that graphics/virtualization workloads behave normally.
• Track vendor advisories referenced in the record, including Debian LTS, OpenAnolis Bugzilla, and Siemens ProductCERT, for package-specific remediation guidance.

Evidence notes

The supplied official metadata shows CVE-2022-38096 as a Linux kernel issue with CWE-476 and CVSS 3.1 vector AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H. It also lists a vulnerable Linux kernel CPE beginning at 4.20 and references public advisories from OpenAnolis Bugzilla, Debian LTS, and Siemens ProductCERT. This debrief stays within that corpus and does not infer a fixed build or exploit details beyond the provided data.

Official resources