CVE-2019-20812

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5
Description
An issue was discovered in the Linux kernel before 5.4.7. The prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067.
Overview
  • CVE ID
  • CVE-2019-20812
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2020-06-03T03:15:10
  • Last Modified Date
  • 2021-06-14T18:15:18
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.4.7
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 4.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.9
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-5.4.7 Release Notes Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b43d1f9f7067c6759b1051e8ecb84e82cef569fe Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html
https://www.oracle.com/security-alerts/cpuApr2021.html
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-20812
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20812
History
Created Old Value New Value Data Type Notes
2022-05-10 07:11:39 Added to TrackCVE
2022-12-04 17:12:19 2020-06-03T03:15Z 2020-06-03T03:15:10 CVE Published Date updated
2022-12-04 17:12:19 2021-06-14T18:15:18 CVE Modified Date updated
2022-12-04 17:12:19 Modified Vulnerability Status updated