CVE-2019-20422

CVSS V2 Low 2.1 CVSS V3 Medium 5.5
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.
Overview
  • CVE ID
  • CVE-2019-20422
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2020-01-27T05:15:10
  • Last Modified Date
  • 2020-03-13T10:15:12
Weakness Enumerations
CWE URL
CWE-755 http://cwe.mitre.org/data/definitions/755.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.3.4
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 Mailing List Vendor Advisory
https://github.com/torvalds/linux/commit/7b09c2d052db4b4ad0b27b97918b46a7746966fa Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20200313-0003/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-20422
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20422
History
Created Old Value New Value Data Type Notes
2022-05-10 16:47:51 Added to TrackCVE
2022-12-04 10:09:23 2020-01-27T05:15Z 2020-01-27T05:15:10 CVE Published Date updated
2022-12-04 10:09:24 2020-03-13T10:15:12 CVE Modified Date updated
2022-12-04 10:09:24 Modified Vulnerability Status updated