// For flags

CVE-2015-7872

kernel: Keyrings crash triggerable by unprivileged user

Severity Score

2.1
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 4.2.6 allows local users to cause a denial of service (OOPS) via crafted keyctl commands.

La función key_gc_unused_keys en security/keys/gc.c en el kernel Linux hasta la versión 4.2.6 permite a usuarios locales causar una denegación de servicio (OOPS) a través de comandos keyctl manipulados.

It was found that the Linux kernel's keys subsystem did not correctly garbage collect uninstantiated keyrings. A local attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2015-10-20 CVE Reserved
  • 2015-11-10 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-456: Missing Initialization of a Variable
CAPEC
References (47)
URL Tag Source
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce1fad2740c648a4340f6f6c391a8a83769d2e8c X_refsource_confirm
http://www.openwall.com/lists/oss-security/2015/10/20/6 Mailing List
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html X_refsource_confirm
http://www.securityfocus.com/bid/77544 Vdb Entry
http://www.securitytracker.com/id/1034472 Vdb Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1272172 X_refsource_confirm
https://github.com/torvalds/linux/commit/f05819df10d7b09f6d1eb6f8534a8f68e5a4fe61 X_refsource_confirm
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05068676 X_refsource_confirm
https://source.android.com/security/bulletin/2016-12-01.html X_refsource_confirm
URL Date SRC
URL Date SRC
URL Date SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f05819df10d7b09f6d1eb6f8534a8f68e5a4fe61 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00013.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html 2023-02-13
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html 2023-02-13
http://marc.info/?l=bugtraq&m=145975164525836&w=2 2023-02-13
http://rhn.redhat.com/errata/RHSA-2015-2636.html 2023-02-13
http://rhn.redhat.com/errata/RHSA-2016-0185.html 2023-02-13
http://rhn.redhat.com/errata/RHSA-2016-0212.html 2023-02-13
http://rhn.redhat.com/errata/RHSA-2016-0224.html 2023-02-13
http://www.debian.org/security/2015/dsa-3396 2023-02-13
http://www.ubuntu.com/usn/USN-2823-1 2023-02-13
http://www.ubuntu.com/usn/USN-2824-1 2023-02-13
http://www.ubuntu.com/usn/USN-2826-1 2023-02-13
http://www.ubuntu.com/usn/USN-2829-1 2023-02-13
http://www.ubuntu.com/usn/USN-2829-2 2023-02-13
http://www.ubuntu.com/usn/USN-2840-1 2023-02-13
http://www.ubuntu.com/usn/USN-2840-2 2023-02-13
http://www.ubuntu.com/usn/USN-2843-1 2023-02-13
http://www.ubuntu.com/usn/USN-2843-2 2023-02-13
http://www.ubuntu.com/usn/USN-2843-3 2023-02-13
https://bugzilla.redhat.com/show_bug.cgi?id=1272371 2016-02-16
https://github.com/torvalds/linux/commit/ce1fad2740c648a4340f6f6c391a8a83769d2e8c 2023-02-13
https://access.redhat.com/security/cve/CVE-2015-7872 2016-02-16
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"
 <= 4.2.6
Search vendor "Linux" for product "Linux Kernel" and version " <= 4.2.6"
-
Affected