What is CVE-2024-38667?

CVE-2024-38667 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Write flaw (CWE-787), affecting Linux kernel versions from 5.7 onward and patched in 6.1.93, 6.6.33, 6.9.4 and others. CVE-2024-38667 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-38667?

CVE-2024-38667 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-2024-38667?

Yes, CVE-2024-38667 has been patched. Fixed versions include 6.1.93, 6.6.33, 6.9.4 and others. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-38667 actively exploited?

CVE-2024-38667 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-2024-38667

High

In the Linux kernel, the following vulnerability has been resolved: riscv: prevent pt_regs corruption for secondary idle threads Top of the kernel thread stack should be reserved for pt_regs. However this is not the case for the idle threads of the secondary boot harts. Their stacks overlap with their pt_regs, so both may get corrupted. Similar issue has been fixed for the primary hart, see c7cdd96eca28 ("riscv: prevent stack corruption by reserving task_pt_regs(p) early"). However that fix was not propagated to the secondary harts. The problem has been noticed in some CPU hotplug tests with V enabled. The function smp_callin stored several registers on stack, corrupting top of pt_regs structure including status field. As a result, kernel attempted to save or restore inexistent V context.

Package Linux Kernel

Published 2024-06-24

Last modified 2025-05-30

CVSS version 3.1

Patch available

Yes

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-787

CVE-2024-38667 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 5.7 and later are affected. Fixed in 6.1.93, 6.6.33, 6.9.4, 6.10 and their respective stable series.

Affected from

≥ 5.7

Fixed in

✓ 6.1.93 6.1.x ✓ 6.6.33 6.6.x ✓ 6.9.4 6.9.x ✓ 6.10

References

4 total

Kernel Git
https://git.kernel.org/stable/c/0c1f28c32a194303da630fca89481334b9547b80

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/3090c06d50eaa91317f84bf3eac4c265e6cb8d44

Patch
Kernel Git
https://git.kernel.org/stable/c/a638b0461b58aa3205cd9d5f14d6f703d795b4af

Patch
Kernel Git
https://git.kernel.org/stable/c/ea22d4195cca13d5fdbc4d6555a2dfb8a7867a9e

Patch

Details

CVE ID CVE-2024-38667

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-06-24

Modified 2025-05-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-38667?

CVE-2024-38667 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . It affects Linux kernel versions from 5.7 onward and has been patched in 6.1.93, 6.6.33, 6.9.4 and others. CVE-2024-38667 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-38667?

CVE-2024-38667 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-2024-38667?

Yes. CVE-2024-38667 has been patched. Fixed versions include 6.1.93, 6.6.33, 6.9.4 and others. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-38667 actively exploited?

No. CVE-2024-38667 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.