CVE-2019-20422

Medium

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.

Package Linux Kernel
Published 2020-01-27
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-755

CVE-2019-20422 is classified as CWE-755

See CWE-755 on MITRE CWE for full details on this weakness type.

References

3 total

Frequently asked questions

  • What is CVE-2019-20422?

    CVE-2019-20422 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2019-20422 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2019-20422?

    CVE-2019-20422 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2019-20422?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2019-20422 patch availability.

  • Is CVE-2019-20422 actively exploited?

    No. CVE-2019-20422 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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