// For flags

CVE-2016-9777

Ubuntu Security Notice USN-3190-1

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.

KVM en el kernel de Linux en versiones anteriores a 4.8.12, cuando se habilita I/O APIC, no restringe adecuadamente el índice VCPU, lo que permite a usuarios de SO invitados obtener privilegios del SO de anfitrión o provocar una denegación de servicio (acceso al array fuera de rango y caída del SO anfitrión) a través de una petición interrumpida manipulada, relacionado con arch/x86/kvm/ioapic.c y arch/x86/kvm/ioapic.h.

Mikulas Patocka discovered that the asynchronous multibuffer cryptographic daemon in the Linux kernel did not properly handle being invoked with incompatible algorithms. A local attacker could use this to cause a denial of service. It was discovered that a use-after-free existed in the KVM susbsystem of the Linux kernel when creating devices. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-12-02 CVE Reserved
  • 2016-12-28 CVE Published
  • 2024-08-06 CVE Updated
  • 2025-05-21 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-125: Out-of-bounds Read
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
>= 4.8 < 4.8.12
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.8 < 4.8.12"
-
Affected