// For flags

CVE-2014-0205

kernel: futex: refcount issue in case of requeue

Severity Score

6.9
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The futex_wait function in kernel/futex.c in the Linux kernel before 2.6.37 does not properly maintain a certain reference count during requeue operations, which allows local users to cause a denial of service (use-after-free and system crash) or possibly gain privileges via a crafted application that triggers a zero count.

La función futex_wait en kernel/futex.c en el kernel de Linux anterior a 2.6.37 no mantiene debidamente cierta cuenta de referencias durante las operaciones de rehacer colas, lo que permite a usuarios locales causar una denegación de servicio (uso después de liberación y caída del sistema) o posiblemente tener otro impacto no especificado a través de una aplicación manipulada que provoca una cuenta a cero.

A flaw was found in the way the Linux kernel's futex subsystem handled reference counting when requeuing futexes during futex_wait(). A local, unprivileged user could use this flaw to zero out the reference counter of an inode or an mm struct that backs up the memory area of the futex, which could lead to a use-after-free flaw, resulting in a system crash or, potentially, privilege escalation.

*Credits: N/A
CVSS Scores
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
  • 2013-12-03 CVE Reserved
  • 2014-09-11 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-08-06 CVE Updated
  • 2024-08-06 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
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Linux Kernel
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<= 2.6.36.4
Search vendor "Linux" for product "Linux Kernel" and version " <= 2.6.36.4"
-
Affected
Linux
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Linux Kernel
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2.6.36
Search vendor "Linux" for product "Linux Kernel" and version "2.6.36"
-
Affected
Linux
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Linux Kernel
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2.6.36
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rc1
Affected
Linux
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Linux Kernel
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2.6.36
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rc2
Affected
Linux
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Linux Kernel
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2.6.36
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rc3
Affected
Linux
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Linux Kernel
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2.6.36
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rc4
Affected
Linux
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Linux Kernel
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2.6.36
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rc5
Affected
Linux
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Linux Kernel
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2.6.36
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rc6
Affected
Linux
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Linux Kernel
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2.6.36
Search vendor "Linux" for product "Linux Kernel" and version "2.6.36"
rc7
Affected
Linux
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Linux Kernel
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2.6.36
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rc8
Affected
Linux
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Linux Kernel
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2.6.36.1
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-
Affected
Linux
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Linux Kernel
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2.6.36.2
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-
Affected
Linux
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Linux Kernel
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2.6.36.3
Search vendor "Linux" for product "Linux Kernel" and version "2.6.36.3"
-
Affected