What is CVE-2023-26544?

CVE-2023-26544 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). CVE-2023-26544 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-26544?

CVE-2023-26544 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-2023-26544?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-26544 patch availability.

Is CVE-2023-26544 actively exploited?

CVE-2023-26544 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-2023-26544

High

In the Linux kernel 6.0.8, there is a use-after-free in run_unpack in fs/ntfs3/run.c, related to a difference between NTFS sector size and media sector size.

Package Linux Kernel

Published 2023-02-25

Last modified 2025-05-05

CVSS version 3.1

Patch available

Awaiting data

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-2023-26544 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

4 total

Lkml
https://lkml.org/lkml/2023/2/20/128

Exploit Mailing List Third Party Advisory
SUSE
https://bugzilla.suse.com/show_bug.cgi?id=1208697
Kernel Git
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=887bfc546097fbe8071dac13b2fef73b77920899
Security
https://security.netapp.com/advisory/ntap-20230316-0010/

Third Party Advisory

Details

CVE ID CVE-2023-26544

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2023-02-25

Modified 2025-05-05

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-26544?

CVE-2023-26544 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) . CVE-2023-26544 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-26544?

CVE-2023-26544 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-2023-26544?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2023-26544 patch availability.
Is CVE-2023-26544 actively exploited?

No. CVE-2023-26544 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.