CVE-2016-4470
kernel: Uninitialized variable in request_key handling causes kernel crash in error handling path
Severity Score
5.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.
La función key_reject_and_link en security/keys/key.c en el kernel de Linux hasta la versión 4.6.3 no asegura que cierta estructura de datos esté inicializada, lo que permite a usuarios locales provocar una denegación de servicio (caída del sistema) a través de vectores involucrando un comando keyctl request2 manipulado.
A flaw was found in the Linux kernel's keyring handling code: the key_reject_and_link() function could be forced to free an arbitrary memory block. An attacker could use this flaw to trigger a use-after-free condition on the system, potentially allowing for privilege escalation.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2016-05-02 CVE Reserved
- 2016-06-27 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-253: Incorrect Check of Function Return Value
CAPEC
References (49)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2016/06/15/11 | Mailing List |
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| http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html | Third Party Advisory |
|
| http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html | X_refsource_confirm |
|
| http://www.securitytracker.com/id/1036763 | Vdb Entry |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Oracle Search vendor "Oracle" | Vm Server Search vendor "Oracle" for product "Vm Server" | 3.3 Search vendor "Oracle" for product "Vm Server" and version "3.3" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Vm Server Search vendor "Oracle" for product "Vm Server" | 3.4 Search vendor "Oracle" for product "Vm Server" and version "3.4" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Linux Search vendor "Oracle" for product "Linux" | 5.0 Search vendor "Oracle" for product "Linux" and version "5.0" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Linux Search vendor "Oracle" for product "Linux" | 6 Search vendor "Oracle" for product "Linux" and version "6" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Linux Search vendor "Oracle" for product "Linux" | 7 Search vendor "Oracle" for product "Linux" and version "7" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | <= 4.6.3 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.6.3" | - |
Affected
| ||||||
| Novell Search vendor "Novell" | Suse Linux Enterprise Real Time Extension Search vendor "Novell" for product "Suse Linux Enterprise Real Time Extension" | 12.0 Search vendor "Novell" for product "Suse Linux Enterprise Real Time Extension" and version "12.0" | sp1 |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Real Time Search vendor "Redhat" for product "Enterprise Linux For Real Time" | 7.0 Search vendor "Redhat" for product "Enterprise Linux For Real Time" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Hpc Node Search vendor "Redhat" for product "Enterprise Linux Hpc Node" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Hpc Node" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Hpc Node Eus Search vendor "Redhat" for product "Enterprise Linux Hpc Node Eus" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Hpc Node Eus" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus" | 7.2 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Mrg Search vendor "Redhat" for product "Enterprise Mrg" | 2.0 Search vendor "Redhat" for product "Enterprise Mrg" and version "2.0" | - |
Affected
| ||||||