CVE-2020-29363 Memory corruption in n/a

What is CVE-2020-29363?

CVE-2020-29363 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 16 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

Weakness: CWE-787

Which versions are affected by CVE-2020-29363?

It affects 3 products.

Products include Debian Debian Linux, Oracle Communications Cloud Native Core Policy, P11-Kit Project P11-Kit.

How do I fix CVE-2020-29363?

Upgrade to a fixed version.

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

Is CVE-2020-29363 being exploited?

There is no known exploitation of CVE-2020-29363 in the wild and no public exploit code.

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 ALPINE-CVE-2020-29363, DEBIAN-CVE-2020-29363, GHSA-5j67-fw89-fp6x, UBUNTU-CVE-2020-29363.