Use-after-free in Linux kernel - CVE-2022-48771

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Main Vulnerability Database Vulnerabilities #VU92899

Use-after-free in Linux kernel - CVE-2022-48771

Published: June 20, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU92899
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-48771
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the vmw_kms_helper_buffer_finish() function in drivers/gpu/drm/vmwgfx/vmwgfx_kms.c, within the vmw_fence_event_ioctl() function in drivers/gpu/drm/vmwgfx/vmwgfx_fence.c, within the vmw_execbuf_fence_commands(), vmw_execbuf_copy_fence_user() and vmw_execbuf_process() functions in drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c. A local user can escalate privileges on the system.


How to mitigate CVE-2022-48771

Install update from vendor's website.

Sources