In pollOnce of ALooper.cpp, there is possible memory corruption due to a use after free.

published 2021-04-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-3048

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits: 0; none known

In pollOnce of ALooper.cpp, there is possible memory corruption 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-9 Android-10 Android-11 Android-8.1Android ID: A-175074139

Patch / fix

links 1

source.android.com/security/bulletin/2021-04-01 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-074-07 updated 2024-03-14 cvss 7.8

Siemens SIMATIC

Siemens SIMATIC RF160B (6GT2003-0FA00) <V2.2
affected: mitigation “Siemens has released a new version (V2.2) for SIMATIC RF160B and recommends to update to the latest version.” siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a Android

Classification

Weakness

CWE-416 Use After Free

References

source.android.com /security/bulletin/2021-04-01
patch, vendor-advisory

Sources

CVE List CVE-2021-0429
NVD CVE-2021-0429

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary