CVE-2021-0920

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Summary

CVECVE-2021-0920
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-15 19:15:00 UTC
Updated2024-02-02 16:46:00 UTC
DescriptionIn 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

Risk And Classification

EPSS: 0.009330000 probability, percentile 0.760740000 (date 2026-04-01)

CISA KEV: Listed on 2022-05-23; due 2022-06-13; ransomware use Unknown

Problem Types: CWE-362

CISA Known Exploited Vulnerability

VendorAndroid
ProductKernel
NameAndroid Kernel Race Condition Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://nvd.nist.gov/vuln/detail/CVE-2021-0920

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Operating System Google Android All All All All

References

ReferenceSourceLinkTags
Android Security Bulletin—November 2021  |  Android Open Source Project MISC source.android.com
[SECURITY] [DLA 2843-1] linux security update MLIST lists.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 159610 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2022-9010)
  • 159611 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2022-9011)
  • 159612 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2022-9012)
  • 159613 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2022-9013)
  • 159614 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2022-9014)
  • 159664 Oracle Enterprise Linux Security Update for kernel security and bug fix update (ELSA-2022-0620)
  • 159700 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-0825)
  • 159777 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2022-9348)
  • 160089 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-9781)
  • 178943 Debian Security Update for linux (DLA 2843-1)
  • 180188 Debian Security Update for linux (CVE-2021-0920)
  • 240093 Red Hat Update for kpatch-patch (RHSA-2022:0592)
  • 240094 Red Hat Update for kpatch-patch (RHSA-2022:0590)
  • 240096 Red Hat Update for kernel-rt (RHSA-2022:0622)
  • 240100 Red Hat Update for kernel (RHSA-2022:0636)
  • 240101 Red Hat Update for kernel-rt (RHSA-2022:0629)
  • 240115 Red Hat Update for kernel (RHSA-2022:0620)
  • 240120 Red Hat Update for kpatch-patch (RHSA-2022:0772)
  • 240121 Red Hat Update for kernel-rt (RHSA-2022:0771)
  • 240122 Red Hat Update for kernel security (RHSA-2022:0777)
  • 240128 Red Hat Update for kernel security (RHSA-2022:0825)
  • 240130 Red Hat Update for kernel-rt (RHSA-2022:0819)
  • 240144 Red Hat Update for kpatch-patch (RHSA-2022:0849)
  • 240418 Red Hat Update for kpatch-patch (RHSA-2022:0851)
  • 240440 Red Hat Update for kernel (RHSA-2022:1324)
  • 240441 Red Hat Update for kpatch-patch (RHSA-2022:1103)
  • 257155 CentOS Security Update for kernel (CESA-2022:0620)
  • 390254 Oracle Managed Virtualization (VM) Server for x86 Security Update for kernel (OVMSA-2022-0005)
  • 390261 Oracle Managed Virtualization (VM) Server for x86 Security Update for kernel (OVMSA-2022-0014)
  • 610380 Google Android Devices November 2021 Security Patch Missing
  • 610385 Google Android December 2021 Security Patch Missing for Samsung
  • 610387 Google Android December 2021 Security Patch Missing for LGE
  • 610388 Google Android December 2021 Security Patch Missing for Huawei EMUI
  • 671295 EulerOS Security Update for kernel (EulerOS-SA-2022-1243)
  • 671367 EulerOS Security Update for kernel (EulerOS-SA-2022-1308)
  • 671380 EulerOS Security Update for kernel (EulerOS-SA-2022-1292)
  • 671401 EulerOS Security Update for kernel (EulerOS-SA-2022-1328)
  • 671436 EulerOS Security Update for kernel (EulerOS-SA-2022-1352)
  • 671543 EulerOS Security Update for kernel (EulerOS-SA-2022-1475)
  • 671703 EulerOS Security Update for kernel (EulerOS-SA-2022-1735)
  • 751600 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0068-1)
  • 751602 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0080-1)
  • 751695 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0367-1)
  • 751697 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0366-1)
  • 751701 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2022:0366-1)
  • 751702 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0371-1)
  • 751771 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 39 for SLE 12 SP3) (SUSE-SU-2022:0667-1)
  • 751776 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 42 for SLE 12 SP3) (SUSE-SU-2022:0668-1)
  • 751837 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0762-1)
  • 751952 OpenSUSE Security Update for Linux Kernel (openSUSE-SU-2022:1039-1)
  • 751956 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2022:1037-1)
  • 752016 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1039-1)
  • 752042 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1197-1)
  • 753110 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 12 for SLE 15 SP3) (SUSE-SU-2022:0619-1)
  • 753188 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 7 for SLE 15 SP3) (SUSE-SU-2022:0660-1)
  • 753203 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 26 for SLE 12 SP5) (SUSE-SU-2022:0647-1)
  • 753249 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 25 for SLE 15 SP2) (SUSE-SU-2022:0996-1)
  • 753289 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 15 for SLE 15 SP3) (SUSE-SU-2022:1034-1)
  • 753338 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 14 for SLE 15 SP3) (SUSE-SU-2022:0615-1)
  • 753348 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1038-1)
  • 753373 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1257-1)
  • 753422 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1037-1)
  • 940463 AlmaLinux Security Update for kernel (ALSA-2022:0825)
  • 960782 Rocky Linux Security Update for kernel-rt (RLSA-2022:0819)
  • 960805 Rocky Linux Security Update for kernel (RLSA-2022:0825)
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