CVE-2019-18198

high

Description

In the Linux kernel before 5.3.4, a reference count usage error in the fib6_rule_suppress() function in the fib6 suppression feature of net/ipv6/fib6_rules.c, when handling the FIB_LOOKUP_NOREF flag, can be exploited by a local attacker to corrupt memory, aka CID-ca7a03c41753.

References

https://usn.ubuntu.com/4161-1/

https://security.netapp.com/advisory/ntap-20191031-0005/

https://launchpad.net/bugs/1847478

https://github.com/torvalds/linux/commit/ca7a03c4175366a92cee0ccc4fec0038c3266e26

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca7a03c4175366a92cee0ccc4fec0038c3266e26

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4

Details

Source: Mitre, NVD

Published: 2019-10-18

Updated: 2023-01-20

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

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

Severity: High