What is CVE-2023-52445?

CVE-2023-52445 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 2.6.26 onward and patched in 4.19.306, 5.4.268, 5.10.209 and others. CVE-2023-52445 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52445?

CVE-2023-52445 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-52445?

Yes, CVE-2023-52445 has been patched. Fixed versions include 4.19.306, 5.4.268, 5.10.209 and others. If you are running Linux kernel 2.6.26 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52445 actively exploited?

CVE-2023-52445 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2023-52445

High

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.

Package Linux Kernel

Published 2024-02-22

Last modified 2024-11-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2023-52445 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.26 and later are affected. Fixed in 4.19.306, 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2, 6.8 and their respective stable series.

Affected from

≥ 2.6.26

Fixed in

✓ 4.19.306 4.19.x ✓ 5.4.268 5.4.x ✓ 5.10.209 5.10.x ✓ 5.15.148 5.15.x ✓ 6.1.75 6.1.x ✓ 6.6.14 6.6.x ✓ 6.7.2 6.7.x ✓ 6.8

References

10 total

Kernel Git
https://git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795

Patch
Kernel Git
https://git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e

Patch
Kernel Git
https://git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb

Patch
Kernel Git
https://git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c

Patch
Kernel Git
https://git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d

Patch

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2023-52445

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-02-22

Modified 2024-11-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52445?

CVE-2023-52445 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 2.6.26 onward and has been patched in 4.19.306, 5.4.268, 5.10.209 and others. CVE-2023-52445 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52445?

CVE-2023-52445 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-52445?

Yes. CVE-2023-52445 has been patched. Fixed versions include 4.19.306, 5.4.268, 5.10.209 and others. If you are running Linux kernel 2.6.26 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52445 actively exploited?

No. CVE-2023-52445 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.