CVE-2017-12193

medium

Description

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11

http://www.securityfocus.com/bid/101678

https://access.redhat.com/errata/RHSA-2018:0151

https://bugzilla.redhat.com/show_bug.cgi?id=1501215

https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b

https://usn.ubuntu.com/3698-1/

https://usn.ubuntu.com/3698-2/

Details

Source: MITRE

Published: 2017-11-22

Updated: 2018-07-13

Type: CWE-476

Risk Information

CVSS v2

Base Score: 4.9

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

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM