A security flaw was discovered in the nl80211_set_rekey_data() function in net/wireless/nl80211.c in the Linux kernel through 4.13.3. This function does not check whether the required attributes are present in a Netlink request. This request can be issued by a user with the CAP_NET_ADMIN capability and may result in a NULL pointer dereference and system crash.
http://seclists.org/oss-sec/2017/q3/437
http://www.debian.org/security/2017/dsa-3981
http://www.securityfocus.com/bid/100855
https://bugzilla.novell.com/show_bug.cgi?id=1058410
https://bugzilla.redhat.com/show_bug.cgi?id=1491046
https://marc.info/?t=150525503100001&r=1&w=2
Source: MITRE
Published: 2017-09-21
Updated: 2019-10-09
Type: CWE-476
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
Base Score: 4.4
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 0.8
Severity: MEDIUM