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Vulnerability · Published Oct 11, 2022 · Assigned by google_android

CVE-2022-20421

High 7.8

In plain English

A high-severity security flaw in Android. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.6%top 49.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC

Official description

In binder_inc_ref_for_node of binder.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-239630375References: Upstream kernel

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.19.11-1DEBIAN-CVE-2022-20421
Debian:13linux5.19.11-1DEBIAN-CVE-2022-20421
Debian:14linux5.19.11-1DEBIAN-CVE-2022-20421
Ubuntu:22.04:LTSlinux5.15.0-57.63USN-5792-1
Ubuntu:22.04:LTSlinux5.15.0-57.63UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-aws5.15.0-1027.31USN-5792-2
Ubuntu:22.04:LTSlinux-aws5.15.0-1027.31UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-azure5.15.0-1030.37UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-azure5.15.0-1030.37USN-5792-2
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1030.37.1USN-5792-2
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1030.37.1UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-gcp5.15.0-1026.33USN-5792-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1026.33UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-gke5.15.0-1024.29USN-5792-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1024.29UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1012.16UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1012.16USN-5792-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1022.25UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-ibm5.15.0-1022.25USN-5792-1
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1023.28UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-kvm5.15.0-1025.30USN-5792-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1025.30UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-57.63USN-5792-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-57.63UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1015.15UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-oracle5.15.0-1026.32USN-5792-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1026.32UBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-raspi5.15.0-1022.24USN-5792-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1022.24UBUNTU-CVE-2022-20421
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-20421
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-20421

Affected products (as reported)

VendorProductVersions
n/a Android Android kernel

References