// For flags

CVE-2015-6937

Ubuntu Security Notice USN-2774-1

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 __rds_conn_create function in net/rds/connection.c in the Linux kernel through 4.2.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound.

La función __rds_conn_create en net/rds/connection.c en el kernel de Linux hasta la versión 4.2.3 permite a usuarios locales provocar una denegación de servicio (referencia a puntero NULL y caída del sistema) o posiblemente tener otro impacto no especificado mediante el uso de un socket que no estaba vinculado adecuadamente.

An update that solves 5 vulnerabilities and has two fixes is now available. This kernel live patch for Linux Kernel 3.12.43-52.6.1 fixes security issues and bugs. A negatively instantiated user key could have been used by a local user to leverage privileges. A NULL pointer dereference flaw was found in the Reliable Datagram Sockets implementation allowing a local user to cause system DoS. A verification was missing that the underlying transport exists when a connection was created. Verify the underlying transport exists before creating a connection, preventing possible DoS. Possible crash when trying to garbage collect an uninstantiated keyring. The prepend_path function in fs/dcache.c in the Linux kernel did not properly handle rename actions inside a bind mount, which allowed local users to bypass an intended container protection mechanism by renaming a directory, related to a "double-chroot attack. Non-security bugfix were also done.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2015-09-14 CVE Reserved
  • 2015-09-23 CVE Published
  • 2024-08-06 CVE Updated
  • 2025-06-16 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
References (31)
URL Date SRC
URL Date SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168447.html 2018-10-17
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168539.html 2018-10-17
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167358.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00009.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html 2018-10-17
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html 2018-10-17
http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html 2018-10-17
http://www.debian.org/security/2015/dsa-3364 2018-10-17
http://www.ubuntu.com/usn/USN-2773-1 2018-10-17
http://www.ubuntu.com/usn/USN-2774-1 2018-10-17
http://www.ubuntu.com/usn/USN-2777-1 2018-10-17
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"
<= 4.2.3
Search vendor "Linux" for product "Linux Kernel" and version " <= 4.2.3"
-
Affected
Canonical
Search vendor "Canonical"
Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
12.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"
lts
Affected
Canonical
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Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
14.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"
lts
Affected
Debian
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Debian Linux
Search vendor "Debian" for product "Debian Linux"
7.0
Search vendor "Debian" for product "Debian Linux" and version "7.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected