What is CVE-2024-38545?

CVE-2024-38545 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 4.9 onward and patched in 5.15.168, 6.1.93, 6.6.33 and others. CVE-2024-38545 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-38545?

CVE-2024-38545 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-2024-38545?

Yes, CVE-2024-38545 has been patched. Fixed versions include 5.15.168, 6.1.93, 6.6.33 and others. If you are running Linux kernel 4.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-38545 actively exploited?

CVE-2024-38545 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-2024-38545

High

In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix UAF for cq async event The refcount of CQ is not protected by locks. When CQ asynchronous events and CQ destruction are concurrent, CQ may have been released, which will cause UAF. Use the xa_lock() to protect the CQ refcount.

Package Linux Kernel

Published 2024-06-19

Last modified 2025-12-23

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-2024-38545 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 4.9 and later are affected. Fixed in 5.15.168, 6.1.93, 6.6.33, 6.8.12, 6.9.3, 6.10 and their respective stable series.

Affected from

≥ 4.9

Fixed in

✓ 5.15.168 5.15.x ✓ 6.1.93 6.1.x ✓ 6.6.33 6.6.x ✓ 6.8.12 6.8.x ✓ 6.9.3 6.9.x ✓ 6.10

References

6 total

Kernel Git
https://git.kernel.org/stable/c/330c825e66ef65278e4ebe57fd49c1d6f3f4e34e

Patch
Kernel Git
https://git.kernel.org/stable/c/37a7559dc1358a8d300437e99ed8ecdab0671507

Patch
Kernel Git
https://git.kernel.org/stable/c/39d26cf46306bdc7ae809ecfdbfeff5aa1098911

Patch
Kernel Git
https://git.kernel.org/stable/c/63da190eeb5c9d849b71f457b15b308c94cbaf08

Patch
Kernel Git
https://git.kernel.org/stable/c/763780ef0336a973e933e40e919339381732dcaf

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2024-38545

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-06-19

Modified 2025-12-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-38545?

CVE-2024-38545 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 4.9 onward and has been patched in 5.15.168, 6.1.93, 6.6.33 and others. CVE-2024-38545 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-38545?

CVE-2024-38545 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-2024-38545?

Yes. CVE-2024-38545 has been patched. Fixed versions include 5.15.168, 6.1.93, 6.6.33 and others. If you are running Linux kernel 4.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-38545 actively exploited?

No. CVE-2024-38545 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.