What is CVE-2024-26990?

CVE-2024-26990 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2024-26990 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-26990?

CVE-2024-26990 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:H/A:N.

Is there a patch available for CVE-2024-26990?

No patch is currently available for CVE-2024-26990. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2024-26990 actively exploited?

CVE-2024-26990 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-26990

Medium

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status Check kvm_mmu_page_ad_need_write_protect() when deciding whether to write-protect or clear D-bits on TDP MMU SPTEs, so that the TDP MMU accounts for any role-specific reasons for disabling D-bit dirty logging. Specifically, TDP MMU SPTEs must be write-protected when the TDP MMU is being used to run an L2 (i.e. L1 has disabled EPT) and PML is enabled. KVM always disables PML when running L2, even when L1 and L2 GPAs are in the some domain, so failing to write-protect TDP MMU SPTEs will cause writes made by L2 to not be reflected in the dirty log. [sean: massage shortlog and changelog, tweak ternary op formatting]

Package Linux Kernel

Published 2024-05-01

Last modified 2025-11-04

CVSS version 3.1

Patch available

Awaiting data

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

High

Availability

None

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

The following references provide additional information about CVE-2024-26990 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
https://lists.fedoraproject.org/archives/list/[email protected]/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
Lists
https://lists.fedoraproject.org/archives/list/[email protected]/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
Lists
https://lists.fedoraproject.org/archives/list/[email protected]/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/
Kernel patch commit
https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22
Patch
Kernel patch commit
https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404
Patch

Details

CVE ID CVE-2024-26990

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-01

Modified 2025-11-04

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2024-26990?

CVE-2024-26990 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2024-26990 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-26990?

CVE-2024-26990 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:H/A:N.
Is there a patch available for CVE-2024-26990?

No patch is currently available for CVE-2024-26990. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2024-26990 actively exploited?

No — CVE-2024-26990 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.