What is CVE-2024-26811?

CVE-2024-26811 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Out-of-bounds Write flaw (CWE-787), affecting Linux kernel versions from 5.15 onward and patched in 5.15.157, 6.1.85, 6.6.26 and others. CVE-2024-26811 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-26811?

CVE-2024-26811 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-2024-26811?

Yes, CVE-2024-26811 has been patched. Fixed versions include 5.15.157, 6.1.85, 6.6.26 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-26811 actively exploited?

CVE-2024-26811 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2024-26811

Medium

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate payload size in ipc response If installing malicious ksmbd-tools, ksmbd.mountd can return invalid ipc response to ksmbd kernel server. ksmbd should validate payload size of ipc response from ksmbd.mountd to avoid memory overrun or slab-out-of-bounds. This patch validate 3 ipc response that has payload.

Package Linux Kernel

Published 2024-04-08

Last modified 2025-11-04

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-787

CVE-2024-26811 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.157, 6.1.85, 6.6.26, 6.8.5, 6.9 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.157 5.15.x ✓ 6.1.85 6.1.x ✓ 6.6.26 6.6.x ✓ 6.8.5 6.8.x ✓ 6.9

References

8 total

Kernel Git
https://git.kernel.org/stable/c/51a6c2af9d20203ddeeaf73314ba8854b38d01bd

Patch
Kernel Git
https://git.kernel.org/stable/c/76af689a45aa44714b46d1a7de4ffdf851ded896

Patch
Kernel Git
https://git.kernel.org/stable/c/88b7f1143b15b29cccb8392b4f38e75b7bb3e300

Patch
Kernel Git
https://git.kernel.org/stable/c/a637fabac554270a851033f5ab402ecb90bc479c

Patch
Kernel Git
https://git.kernel.org/stable/c/a677ebd8ca2f2632ccdecbad7b87641274e15aac

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2024-26811

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-08

Modified 2025-11-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-26811?

CVE-2024-26811 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.157, 6.1.85, 6.6.26 and others. CVE-2024-26811 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-26811?

CVE-2024-26811 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-2024-26811?

Yes. CVE-2024-26811 has been patched. Fixed versions include 5.15.157, 6.1.85, 6.6.26 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-26811 actively exploited?

No. CVE-2024-26811 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.