Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2022-48887

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
21/08/2024
Last modified:
06/09/2024

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/vmwgfx: Remove rcu locks from user resources<br /> <br /> User resource lookups used rcu to avoid two extra atomics. Unfortunately<br /> the rcu paths were buggy and it was easy to make the driver crash by<br /> submitting command buffers from two different threads. Because the<br /> lookups never show up in performance profiles replace them with a<br /> regular spin lock which fixes the races in accesses to those shared<br /> resources.<br /> <br /> Fixes kernel oops&amp;#39;es in IGT&amp;#39;s vmwgfx execution_buffer stress test and<br /> seen crashes with apps using shared resources.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.20 (including) 6.1.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools