CVE-2021-0920

CVSS V2 Medium 6.9 CVSS V3 Medium 6.4
Description
In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel
Overview
  • CVE ID
  • CVE-2021-0920
  • Assigner
  • security@android.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-15T19:15:11
  • Last Modified Date
  • 2022-07-12T17:42:04
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:google:android:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.4
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.5
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://source.android.com/security/bulletin/2021-11-01 Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-0920
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0920
History
Created Old Value New Value Data Type Notes
2022-05-10 06:40:48 Added to TrackCVE
2022-12-06 04:00:14 2021-12-15T19:15Z 2021-12-15T19:15:11 CVE Published Date updated
2022-12-06 04:00:14 2022-07-12T17:42:04 CVE Modified Date updated
2022-12-06 04:00:14 Analyzed Vulnerability Status updated