CVE-2021-1022 Null dereference in Android

What is CVE-2021-1022?

CVE-2021-1022 is a high-severity vulnerability in Google Android, published on 15 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In btif_in_hf_client_generic_evt of btif_hf_client.cc, there is a possible Bluetooth service crash due to a missing null check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-180420059

Weakness: CWE-476

Which versions are affected by CVE-2021-1022?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-1022?

Apply the vendor's patch.

Is CVE-2021-1022 being exploited?

There is no known exploitation of CVE-2021-1022 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as A-180420059, GHSA-5pfp-wg82-hvp6, PUB-A-180420059.