What is CVE-2023-52576?

CVE-2023-52576 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2023-52576 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52576?

CVE-2023-52576 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2023-52576?

No patch is currently available for CVE-2023-52576. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-52576 actively exploited?

CVE-2023-52576 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-2023-52576

Medium

In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer() The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range(). With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic. Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug.

Package Linux Kernel

Published 2024-03-02

Last modified 2025-04-08

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2023-52576 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

References

The following references provide additional information about CVE-2023-52576 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204
Patch
Kernel patch commit
https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b
Patch

Details

CVE ID CVE-2023-52576

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-03-02

Modified 2025-04-08

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-52576?

CVE-2023-52576 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2023-52576 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52576?

CVE-2023-52576 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2023-52576?

No patch is currently available for CVE-2023-52576. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-52576 actively exploited?

No — CVE-2023-52576 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (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. View CWE-416 on MITRE CWE →