What is CVE-2023-52809?

CVE-2023-52809 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 2.6.29 onward and patched in 4.14.331, 4.19.300, 5.4.262 and others. CVE-2023-52809 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52809?

CVE-2023-52809 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-2023-52809?

Yes, CVE-2023-52809 has been patched. Fixed versions include 4.14.331, 4.19.300, 5.4.262 and others. If you are running Linux kernel 2.6.29 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52809 actively exploited?

CVE-2023-52809 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2023-52809

Medium

In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup() fc_lport_ptp_setup() did not check the return value of fc_rport_create() which can return NULL and would cause a NULL pointer dereference. Address this issue by checking return value of fc_rport_create() and log error message on fc_rport_create() failed.

Package Linux Kernel

Published 2024-05-21

Last modified 2024-11-21

CVSS version 3.1

Patch available

Yes

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-476

CVE-2023-52809 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.29 and later are affected. Fixed in 4.14.331, 4.19.300, 5.4.262, 5.10.202, 5.15.140, 6.1.64, 6.5.13, 6.6.3, 6.7 and their respective stable series.

Affected from

≥ 2.6.29

Fixed in

✓ 4.14.331 4.14.x ✓ 4.19.300 4.19.x ✓ 5.4.262 5.4.x ✓ 5.10.202 5.10.x ✓ 5.15.140 5.15.x ✓ 6.1.64 6.1.x ✓ 6.5.13 6.5.x ✓ 6.6.3 6.6.x ✓ 6.7

References

9 total

Kernel Git
https://git.kernel.org/stable/c/442fd24d7b6b29e4a9cd9225afba4142d5f522ba

Patch
Kernel Git
https://git.kernel.org/stable/c/4df105f0ce9f6f30cda4e99f577150d23f0c9c5f

Patch
Kernel Git
https://git.kernel.org/stable/c/56d78b5495ebecbb9395101f3be177cd0a52450b

Patch
Kernel Git
https://git.kernel.org/stable/c/6b9ecf4e1032e645873933e5b43cbb84cac19106

Patch
Kernel Git
https://git.kernel.org/stable/c/77072ec41d6ab3718c3fc639bc149b8037caedfa

Patch

Showing 5 of 9 references View all on NVD

Details

CVE ID CVE-2023-52809

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-11-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52809?

CVE-2023-52809 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 2.6.29 onward and has been patched in 4.14.331, 4.19.300, 5.4.262 and others. CVE-2023-52809 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52809?

CVE-2023-52809 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-2023-52809?

Yes. CVE-2023-52809 has been patched. Fixed versions include 4.14.331, 4.19.300, 5.4.262 and others. If you are running Linux kernel 2.6.29 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52809 actively exploited?

No. CVE-2023-52809 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.