Vulnerability in Linux Kernel
CVE-2019-20422
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 (Mailing List, Vendor Advisory)
- github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa (Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20200313-0003/
Frequently asked questions
- What is CVE-2019-20422?
- CVE-2019-20422 is a medium-severity vulnerability in Linux Kernel, classified under Improper Handling of Exceptional Conditions. CVSS score: 5.5/10. Published 2020-01-27.
- How severe is CVE-2019-20422?
- Medium severity. CVSS v3 base score is 5.5 out of 10.