Vulnerability · Published Oct 14, 2020 · Assigned by google_android

CVE-2020-0423

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 0.5% (higher than 43% 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)0.5%top 56.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack tooling1Public PoC

Official description

In binder_release_work of binder.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-161151868References: N/A

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	linux	5.9.6-1	DEBIAN-CVE-2020-0423
Debian:13	linux	5.9.6-1	DEBIAN-CVE-2020-0423
Debian:14	linux	5.9.6-1	DEBIAN-CVE-2020-0423
Ubuntu:22.04:LTS	linux-intel-iot-realtime	no fix listed	UBUNTU-CVE-2020-0423
Ubuntu:24.04:LTS	linux-raspi-realtime	no fix listed	UBUNTU-CVE-2020-0423
Ubuntu:22.04:LTS	linux-realtime	no fix listed	UBUNTU-CVE-2020-0423

Affected products (as reported)

Vendor	Product	Versions
n/a	Android	Android kernel

References

https://source.android.com/security/bulletin/2020-10-01 x_refsource_MISC
[debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update mailing-list, x_refsource_MLIST