CVE-2022-38457

2022-10-1314:30:24

redhat.com

access.redhat.com

cve-2022-38457

linux kernel

vmwgfx driver

use-after-free

vulnerability

local attacker

denial of service

mitigation

blacklist

6.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H

0.0004 Low

EPSS

Percentile

5.1%

JSON

A use-after-free vulnerability was found in the Linux kernel’s vmwgfx driver in vmw_cmd_res_check. This flaw allows a local, unprivileged attacker with access to either /dev/dri/card0 or /dev/dri/rendererD128, who can issue an ioctl() on the resulting file descriptor, to crash the system, causing a denial of service.

Mitigation

To mitigate this issue, it is possible to prevent the affected code from being loaded by blacklisting the vmwgfx kernel module. For instructions relating to blacklisting a kernel module, please see <https://access.redhat.com/solutions/41278>.