CVE-2020-36557

CVSS V2 None CVSS V3 Medium 5.1
Description
A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.
Overview
  • CVE ID
  • CVE-2020-36557
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-07-21T04:15:09
  • Last Modified Date
  • 2022-07-27T19:24:25
Weakness Enumerations
CWE URL
CWE-362 http://cwe.mitre.org/data/definitions/362.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.6.2
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.1
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.4
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.2
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca4463bf8438b403596edd0ec961ca0d4fbe0220
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-36557
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36557
History
Created Old Value New Value Data Type Notes
2022-07-21 05:00:07 Added to TrackCVE