CVE-2019-20422
MEDIUMLinux Kernel < 5.3.4 - Improper Exception Handling
Title source: ruleDescription
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.
References (3)
Core 3
Core References
Mailing List, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4
Patch, Third Party Advisory x_refsource_misc
https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa
Vendor Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20200313-0003/
Scores
CVSS v3
5.5
EPSS
0.0008
EPSS Percentile
23.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-755
Status
published
Products (1)
linux/linux_kernel
< 5.3.4
Published
Jan 27, 2020
Tracked Since
Feb 18, 2026