CVE-2019-20422

Published: Jan 27, 2020Modified: Jun 17, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

In the Linux kernel before 5.3.4, fib6_rule_lookup in net/ipv6/ip6_fib.c mishandles the RT6_LOOKUP_F_DST_NOREF flag in a reference-count decision, leading to (for example) a crash that was identified by syzkaller, aka CID-7b09c2d052db.

Affected (1)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	Before 5.3.4

Related CWEs

CWE-755

Improper Handling of Exceptional Conditions

The product does not handle or incorrectly handles an exceptional condition.

References (6)

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

Source: cve@mitre.org

Mailing ListVendor Advisory

https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa

Source: cve@mitre.org

PatchThird Party Advisory

https://security.netapp.com/advisory/ntap-20200313-0003/

Source: cve@mitre.org

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

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListVendor Advisory

https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://security.netapp.com/advisory/ntap-20200313-0003/

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.