// For flags

CVE-2024-25744

kernel: untrusted VMM can trigger int80 syscall handling

Severity Score

5.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In the Linux kernel before 6.6.7, an untrusted VMM can trigger int80 syscall handling at any given point. This is related to arch/x86/coco/tdx/tdx.c and arch/x86/mm/mem_encrypt_amd.c.

En el kernel de Linux anterior a 6.6.7, un VMM que no es de confianza puede activar el manejo de llamadas al sistema int80 en cualquier punto dado. Esto está relacionado con arch/x86/coco/tdx/tdx.c y arch/x86/mm/mem_encrypt_amd.c.

A flaw was found in the Linux kernel. A VMM can inject external interrupts on any arbitrary vector at any time, which may allow the guest OS to be manipulated from the VMM side.

Supraja Sridhara, Benedict Schlüter, Mark Kuhne, Andrin Bertschi, and Shweta Shinde discovered that the Confidential Computing framework in the Linux kernel for x86 platforms did not properly handle 32-bit emulation on TDX and SEV. An attacker with access to the VMM could use this to cause a denial of service or possibly execute arbitrary code. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2024-02-12 CVE Reserved
  • 2024-02-12 CVE Published
  • 2024-02-12 EPSS Updated
  • 2024-11-15 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
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Oracle
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Linux
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Affected
Redhat
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Enterprise Linux
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Redhat
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Rhel Eus
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Alma
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Linux
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Amazon
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Linux
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Canonical
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Ubuntu Linux
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Linux
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Linux Kernel
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Opensuse
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Leap
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Oracle
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Linux
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Redhat
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Enterprise Linux
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Redhat
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Rhel Eus
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Rocky
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Linux
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Suse
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Sle-ha
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Suse
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Sle-module-basesystem
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Suse
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Sle-module-development-tools
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Suse
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Sle-module-legacy
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Suse
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Sle-module-live-patching
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Suse
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Sle-module-public-cloud
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Suse
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Sle-we
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Suse
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Sle Hpc
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Suse
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Sled
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Suse
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Sles
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Suse
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Sles Sap
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