CVE Vulnerabilities

CVE-2017-13686

NULL Pointer Dereference

Published: Aug 24, 2017 | Modified: Aug 30, 2017
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

net/ipv4/route.c in the Linux kernel 4.13-rc1 through 4.13-rc6 is too late to check for a NULL fi field when RTM_F_FIB_MATCH is set, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via crafted system calls. NOTE: this does not affect any stable release.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux 4.13 4.13
Linux_kernel Linux 4.13 4.13
Linux_kernel Linux 4.13 4.13
Linux_kernel Linux 4.13 4.13
Linux_kernel Linux 4.13 4.13
Linux_kernel Linux 4.13 4.13

Potential Mitigations

References