What is CVE-2024-26691?

CVE-2024-26691 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Locking flaw (CWE-667), affecting Linux kernel versions from 3.11 onward and patched in 6.6.18, 6.7.6 and 6.8. CVE-2024-26691 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-26691?

CVE-2024-26691 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-2024-26691?

Yes, CVE-2024-26691 has been patched. Fixed versions include 6.6.18, 6.7.6 and 6.8. If you are running Linux kernel 3.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-26691 actively exploited?

CVE-2024-26691 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/667.html

CVE-2024-26691

Medium

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix circular locking dependency The rule inside kvm enforces that the vcpu->mutex is taken *inside* kvm->lock. The rule is violated by the pkvm_create_hyp_vm() which acquires the kvm->lock while already holding the vcpu->mutex lock from kvm_vcpu_ioctl(). Avoid the circular locking dependency altogether by protecting the hyp vm handle with the config_lock, much like we already do for other forms of VM-scoped data.

Package Linux Kernel

Published 2024-04-03

Last modified 2025-02-27

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-667

CVE-2024-26691 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 3.11 and later are affected. Fixed in 6.6.18, 6.7.6, 6.8 and their respective stable series.

Affected from

≥ 3.11

Fixed in

✓ 6.6.18 6.6.x ✓ 6.7.6 6.7.x ✓ 6.8

References

3 total

Kernel Git
https://git.kernel.org/stable/c/10c02aad111df02088d1a81792a709f6a7eca6cc

Patch
Kernel Git
https://git.kernel.org/stable/c/3ab1c40a1e915e350d9181a4603af393141970cc

Patch
Kernel Git
https://git.kernel.org/stable/c/3d16cebf01127f459dcfeb79ed77bd68b124c228

Patch

Details

CVE ID CVE-2024-26691

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-03

Modified 2025-02-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-26691?

CVE-2024-26691 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 3.11 onward and has been patched in 6.6.18, 6.7.6 and 6.8. CVE-2024-26691 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-26691?

CVE-2024-26691 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-2024-26691?

Yes. CVE-2024-26691 has been patched. Fixed versions include 6.6.18, 6.7.6 and 6.8. If you are running Linux kernel 3.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-26691 actively exploited?

No. CVE-2024-26691 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.