CVE-2024-26990

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-26990
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]

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22 Patch
https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed Patch
https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404 Patch
https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22 Patch
https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed Patch
https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404 Patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
History

04 Nov 2025, 18:16

Type Values Removed Values Added
References
  • () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/ -

18 Sep 2025, 14:33

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CWE NVD-CWE-noinfo
CPE cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22 - () https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22 - Patch
References () https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed - () https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed - Patch
References () https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404 - () https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404 - Patch

21 Nov 2024, 09:03

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22 - () https://git.kernel.org/stable/c/2673dfb591a359c75080dd5af3da484b89320d22 -
References () https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed - () https://git.kernel.org/stable/c/cdf811a937471af2d1facdf8ae80e5e68096f1ed -
References () https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404 - () https://git.kernel.org/stable/c/e20bff0f1b2de9cfe303dd35ff46470104a87404 -

13 May 2024, 08:15

Type Values Removed Values Added
References
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}

03 May 2024, 03:16

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: x86/mmu: Proteger contra escritura los SPTE L2 en la MMU TDP al borrar el estado sucio. Verifique kvm_mmu_page_ad_need_write_protect() cuando decida si desea proteger contra escritura o borrar los bits D en los SPTE de la MMU TDP. , de modo que la MMU TDP tenga en cuenta cualquier motivo específico de la función para deshabilitar el registro sucio de bits D. Específicamente, los SPTE de TDP MMU deben estar protegidos contra escritura cuando la TDP MMU se utiliza para ejecutar un L2 (es decir, L1 tiene EPT deshabilitado) y PML está habilitado. KVM siempre desactiva PML cuando se ejecuta L2, incluso cuando los GPA L1 y L2 están en algún dominio, por lo que si no se protegen contra escritura los SPTE TDP MMU, las escrituras realizadas por L2 no se reflejarán en el registro sucio. [sean: masajear el registro corto y el registro de cambios, modificar el formato de operación ternario]
References
  • () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/ -

01 May 2024, 06:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-01 06:15

Updated : 2025-11-04 18:16

NVD link : CVE-2024-26990

Mitre link : CVE-2024-26990

CVE.ORG link : CVE-2024-26990

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo