CVE-2023-52445

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

22/02/2024

Last modified:

04/11/2024

Description

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix use after free on context disconnection Upon module load, a kthread is created targeting the pvr2_context_thread_func function, which may call pvr2_context_destroy and thus call kfree() on the context object. However, that might happen before the usb hub_event handler is able to notify the driver. This patch adds a sanity check before the invalid read reported by syzbot, within the context disconnection call stack.

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::::::::		4.19.306 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.268 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5.0 (including)	5.10.209 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11.0 (including)	5.15.148 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16.0 (including)	6.1.75 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2.0 (including)	6.6.14 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7.0 (including)	6.7.2 (excluding)

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

CVE-2023-52445

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools