What is CVE-2023-52479?

CVE-2023-52479 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2023-52479 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52479?

CVE-2023-52479 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2023-52479?

No patch is currently available for CVE-2023-52479. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-52479 actively exploited?

CVE-2023-52479 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-2023-52479

High

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix uaf in smb20_oplock_break_ack drop reference after use opinfo.

Package Linux Kernel

Published 2024-02-29

Last modified 2025-03-19

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2023-52479 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-2023-52479 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/694e13732e830cbbfedb562e57f28644927c33fd
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8226ffc759ea59f10067b9acdf7f94bae1c69930
Patch
Kernel patch commit
https://git.kernel.org/stable/c/c69813471a1ec081a0b9bf0c6bd7e8afd818afce
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2023-52479

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2024-02-29

Modified 2025-03-19

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-52479?

CVE-2023-52479 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2023-52479 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52479?

CVE-2023-52479 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2023-52479?

No patch is currently available for CVE-2023-52479. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-52479 actively exploited?

No — CVE-2023-52479 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 →