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VULNERABILITIES

CVE-2019-20422 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 CVEMailing ListVendor Advisory
https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa CVEPatchThird Party Advisory
https://security.netapp.com/advisory/ntap-20200313-0003/ CVE
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 [email protected]Mailing ListVendor Advisory
https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa [email protected]PatchThird Party Advisory

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-755Improper Handling of Exceptional Conditions[email protected]

Affected Products

ProductVersions
linux linux kernel
< 5.3.4

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2019-20422
NVD Published Date:
Jan 27, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2019-20422 Details - Not Deferred