PT-2024-8438 · Linux+6 · Linux Kernel+6

Published 2024-04-11 · Updated 2025-09-29 · CVE-2024-26990

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the Linux kernel's KVM (Kernel-based Virtual Machine) component, specifically the x86/mmu module. It involves incorrect calculations in certain functions, which can lead to a denial of service when exploited. The vulnerability is related to the write-protection of L2 SPTEs (Second-Level Page Table Entries) in the TDP MMU (Two-Dimensional Paging Memory Management Unit) when clearing dirty status. The TDP MMU must account for role-specific reasons for disabling D-bit dirty logging, and failing to write-protect TDP MMU SPTEs can cause writes made by L2 to not be reflected in the dirty log.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-682

Related Identifiers

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

BDU:2024-09997

CVE-2024-26990

INFSA-2024_9315

MGASA-2024-0263

MGASA-2024-0266

RHSA-2024:9315

RHSA-2024_9315

SUSE-SU-2024:2135-1

SUSE-SU-2024:2203-1

SUSE-SU-2024:2973-1

SUSE-SU-2025:20008-1

SUSE-SU-2025:20028-1

USN-6893-1

USN-6893-2

USN-6893-3

USN-6918-1

Affected Products

Astra Linux

Linuxmint

Linux Kernel

Red Hat

Red Os

Suse

Ubuntu

References · 2163

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26990.json · Exploit
• https://ubuntu.com/security/CVE-2024-26999 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35860 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-36023 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27013 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35877 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35959 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35939 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27008 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27000 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-26990 · Security Note
• https://ubuntu.com/security/CVE-2024-35894 · Vendor Advisory
• https://osv.dev/vulnerability/USN-6893-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35924 · Vendor Advisory