CVE-2022-48771

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

20/06/2024

Last modified:

06/01/2025

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix stale file descriptors on failed usercopy A failing usercopy of the fence_rep object will lead to a stale entry in the file descriptor table as put_unused_fd() won&#39;t release it. This enables userland to refer to a dangling &#39;file&#39; object through that still valid file descriptor, leading to all kinds of use-after-free exploitation scenarios. Fix this by deferring the call to fd_install() until after the usercopy has succeeded.

Impact

Vector 3.x

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.14 (including)	4.14.264 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.227 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.175 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.95 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.18 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.16.4 (excluding)
cpe:2.3:o:linux:linux_kernel:5.17:rc1::::::

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

CVE-2022-48771

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools