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. 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?

No patch is currently available for CVE-2019-20422. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-20422 actively exploited?

CVE-2019-20422 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

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

The following references provide additional information about CVE-2019-20422 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

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

Mailing List Vendor Advisory
Security
https://security.netapp.com/advisory/ntap-20200313-0003/
Kernel patch commit
https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa
Patch

Details

CVE ID CVE-2019-20422

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2020-01-27

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

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?

No patch is currently available for CVE-2019-20422. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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.