What is CVE-2023-52646?

CVE-2023-52646 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 3.19 onward and patched in 4.14.306, 4.19.273, 5.4.232 and others. CVE-2023-52646 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52646?

CVE-2023-52646 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-2023-52646?

Yes, CVE-2023-52646 has been patched. Fixed versions include 4.14.306, 4.19.273, 5.4.232 and others. If you are running Linux kernel 3.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52646 actively exploited?

CVE-2023-52646 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-2023-52646

Medium

In the Linux kernel, the following vulnerability has been resolved: aio: fix mremap after fork null-deref Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL. [[email protected]: fix 80 column issue]

Package Linux Kernel

Published 2024-04-26

Last modified 2025-01-27

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-2023-52646 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 3.19 and later are affected. Fixed in 4.14.306, 4.19.273, 5.4.232, 5.10.169, 5.15.95, 6.1.13, 6.2 and their respective stable series.

Affected from

≥ 3.19

Fixed in

✓ 4.14.306 4.14.x ✓ 4.19.273 4.19.x ✓ 5.4.232 5.4.x ✓ 5.10.169 5.10.x ✓ 5.15.95 5.15.x ✓ 6.1.13 6.1.x ✓ 6.2

References

7 total

Kernel Git
https://git.kernel.org/stable/c/178993157e8c50aef7f35d7d6d3b44bb428199e1

Patch
Kernel Git
https://git.kernel.org/stable/c/4326d0080f7e84fba775da41d158f46cf9d3f1c2

Patch
Kernel Git
https://git.kernel.org/stable/c/808f1e4b5723ae4eda724d2ad6f6638905eefd95

Patch
Kernel Git
https://git.kernel.org/stable/c/81e9d6f8647650a7bead74c5f926e29970e834d1

Patch
Kernel Git
https://git.kernel.org/stable/c/af126acf01a12bdb04986fd26fc2eb3b40249e0d

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2023-52646

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-26

Modified 2025-01-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52646?

CVE-2023-52646 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 3.19 onward and has been patched in 4.14.306, 4.19.273, 5.4.232 and others. CVE-2023-52646 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52646?

CVE-2023-52646 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-2023-52646?

Yes. CVE-2023-52646 has been patched. Fixed versions include 4.14.306, 4.19.273, 5.4.232 and others. If you are running Linux kernel 3.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52646 actively exploited?

No. CVE-2023-52646 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.