CVE-2019-20422

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CVSS 3.1

5.5 medium

EPSS

<1%p37

Published

Jan 27, 2020 (Jan 27, 2020)

Modified

Jun 17, 2026

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.

Vendors: linux
Products: linux kernel
Weakness: CWE-755
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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