CVE-2017-12193

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2017-12193
The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References
Link Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b Issue Tracking Patch
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11 Issue Tracking
http://www.securityfocus.com/bid/101678 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0151
https://bugzilla.redhat.com/show_bug.cgi?id=1501215 Issue Tracking
https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b Patch Vendor Advisory
https://usn.ubuntu.com/3698-1/
https://usn.ubuntu.com/3698-2/
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

12 Feb 2023, 23:28

Type Values Removed Values Added
References
  • {'url': 'https://access.redhat.com/errata/RHSA-2018:0181', 'name': 'https://access.redhat.com/errata/RHSA-2018:0181', 'tags': [], 'refsource': 'MISC'}
  • {'url': 'https://access.redhat.com/security/cve/CVE-2017-12193', 'name': 'https://access.redhat.com/security/cve/CVE-2017-12193', 'tags': [], 'refsource': 'MISC'}
  • {'url': 'https://access.redhat.com/errata/RHSA-2018:0152', 'name': 'https://access.redhat.com/errata/RHSA-2018:0152', 'tags': [], 'refsource': 'MISC'}
Summary A flaw was found in the Linux kernel's implementation of associative arrays introduced in 3.13. This functionality was backported to the 3.10 kernels in Red Hat Enterprise Linux 7. The flaw involved a null pointer dereference in assoc_array_apply_edit() due to incorrect node-splitting in assoc_array implementation. This affects the keyring key type and thus key addition and link creation operations may cause the kernel to panic. The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.

02 Feb 2023, 16:18

Type Values Removed Values Added
References
  • (MISC) https://access.redhat.com/errata/RHSA-2018:0181 -
  • (MISC) https://access.redhat.com/security/cve/CVE-2017-12193 -
  • (MISC) https://access.redhat.com/errata/RHSA-2018:0152 -
Summary The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations. A flaw was found in the Linux kernel's implementation of associative arrays introduced in 3.13. This functionality was backported to the 3.10 kernels in Red Hat Enterprise Linux 7. The flaw involved a null pointer dereference in assoc_array_apply_edit() due to incorrect node-splitting in assoc_array implementation. This affects the keyring key type and thus key addition and link creation operations may cause the kernel to panic.
Information

Published : 2017-11-22 18:29

Updated : 2023-12-10 12:15

NVD link : CVE-2017-12193

Mitre link : CVE-2017-12193

CVE.ORG link : CVE-2017-12193

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference