CVE-2022-48771
kernel: drm/vmwgfx: Fix stale file descriptors on failed usercopy
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 20, 2024
Updated · August 5, 2026
Description
A use-after-free vulnerability has been identified in the Linux kernel's VMware graphics driver (vmwgfx) driver. This flaw occurs during the usercopy operation for the fence_rep object. If this operation fails, it can leave a stale (dangling) file descriptor in the system's file descriptor table. This allows userland processes to reference an invalidated file object, ultimately leading to a use-after-free condition. Successful exploitation of this vulnerability could result in memory corruption, system instability, or a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free