// For flags

CVE-2017-10661

Linux kernel < 4.10.15 - Race Condition Privilege Escalation

Severity Score

7.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list corruption or use-after-free) via simultaneous file-descriptor operations that leverage improper might_cancel queueing.

Una condición de carrera en fs/timerfd.c en el kernel Linux en versiones anteriores a la 4.10.15 permite que usuarios locales obtengan privilegios o provoquen una denegación de servicio (corrupción de lista o use-after-free) mediante operaciones simultáneas de descriptor de archivo que aprovechan la cola inadecuada might_cancel.

A race condition was found in the Linux kernel before version 4.11-rc1 in 'fs/timerfd.c' file which allows a local user to cause a kernel list corruption or use-after-free via simultaneous operations with a file descriptor which leverage improper 'might_cancel' queuing. An unprivileged local user could use this flaw to cause a denial of service of the system. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-06-28 CVE Reserved
  • 2017-08-19 CVE Published
  • 2024-08-05 CVE Updated
  • 2024-08-05 First Exploit
  • 2024-08-13 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • 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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< 3.2.92
Search vendor "Linux" for product "Linux Kernel" and version " < 3.2.92"
-
Affected
Linux
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Linux Kernel
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>= 3.3 < 3.16.47
Search vendor "Linux" for product "Linux Kernel" and version " >= 3.3 < 3.16.47"
-
Affected
Linux
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Linux Kernel
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>= 3.17 < 3.18.52
Search vendor "Linux" for product "Linux Kernel" and version " >= 3.17 < 3.18.52"
-
Affected
Linux
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Linux Kernel
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>= 3.19 < 4.1.41
Search vendor "Linux" for product "Linux Kernel" and version " >= 3.19 < 4.1.41"
-
Affected
Linux
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Linux Kernel
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>= 4.2 < 4.4.67
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 4.4.67"
-
Affected
Linux
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Linux Kernel
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>= 4.5 < 4.9.27
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.27"
-
Affected
Linux
Search vendor "Linux"
Linux Kernel
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>= 4.10 < 4.10.15
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.10.15"
-
Affected
Redhat
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Enterprise Linux
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7.0
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-
Affected
Redhat
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Enterprise Linux Aus
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7.4
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-
Affected
Redhat
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Enterprise Linux Server Eus
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7.5
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-
Affected
Redhat
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Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions
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7.4
Search vendor "Redhat" for product "Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions" and version "7.4"
-
Affected
Debian
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Debian Linux
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8.0
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-
Affected
Debian
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Debian Linux
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9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected