CVE-2021-0308 Memory corruption in Android

What is CVE-2021-0308?

CVE-2021-0308 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 11 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In ReadLogicalParts of basicmbr.cc, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-8.1, Android-9, Android-10, Android-11, Android-8.0; Android ID: A-158063095.

Weakness: CWE-787

Which versions are affected by CVE-2021-0308?

It affects 2 products.

Products include Debian Debian Linux, Google Android.

How do I fix CVE-2021-0308?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-0308 being exploited?

There is no known exploitation of CVE-2021-0308 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as A-158063095, ALPINE-CVE-2021-0308, ASB-A-158063095, DEBIAN-CVE-2021-0308, GHSA-gxqw-x97w-h62r, UBUNTU-CVE-2021-0308.