What is CVE-2024-43854?

CVE-2024-43854 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 2.6.27 onward and patched in 4.19.322, 5.4.284, 5.10.226 and others. CVE-2024-43854 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-43854?

CVE-2024-43854 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-2024-43854?

Yes, CVE-2024-43854 has been patched. Fixed versions include 4.19.322, 5.4.284, 5.10.226 and others. If you are running Linux kernel 2.6.27 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-43854 actively exploited?

CVE-2024-43854 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2024-43854

Medium

In the Linux kernel, the following vulnerability has been resolved: block: initialize integrity buffer to zero before writing it to media Metadata added by bio_integrity_prep is using plain kmalloc, which leads to random kernel memory being written media. For PI metadata this is limited to the app tag that isn't used by kernel generated metadata, but for non-PI metadata the entire buffer leaks kernel memory. Fix this by adding the __GFP_ZERO flag to allocations for writes.

Package Linux Kernel

Published 2024-08-17

Last modified 2025-11-03

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-401

CVE-2024-43854 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.27 and later are affected. Fixed in 4.19.322, 5.4.284, 5.10.226, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11 and their respective stable series.

Affected from

≥ 2.6.27

Fixed in

✓ 4.19.322 4.19.x ✓ 5.4.284 5.4.x ✓ 5.10.226 5.10.x ✓ 5.15.165 5.15.x ✓ 6.1.103 6.1.x ✓ 6.6.44 6.6.x ✓ 6.10.3 6.10.x ✓ 6.11

References

10 total

Kernel Git
https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644

Patch
Kernel Git
https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f

Patch
Kernel Git
https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2

Patch
Kernel Git
https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1

Patch
Kernel Git
https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00

Patch

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2024-43854

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-08-17

Modified 2025-11-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-43854?

CVE-2024-43854 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 2.6.27 onward and has been patched in 4.19.322, 5.4.284, 5.10.226 and others. CVE-2024-43854 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-43854?

CVE-2024-43854 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-2024-43854?

Yes. CVE-2024-43854 has been patched. Fixed versions include 4.19.322, 5.4.284, 5.10.226 and others. If you are running Linux kernel 2.6.27 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-43854 actively exploited?

No. CVE-2024-43854 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.