CVE-2020-12653 Memory corruption in n/a

What is CVE-2020-12653?

CVE-2020-12653 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 5 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was found in Linux kernel before 5.5.4. The mwifiex_cmd_append_vsie_tlv() function in drivers/net/wireless/marvell/mwifiex/scan.c allows local users to gain privileges or cause a denial of service because of an incorrect memcpy and buffer overflow, aka CID-b70261a288ea.

Weakness: CWE-787

Which versions are affected by CVE-2020-12653?

It affects 22 products.

Products include Debian Debian Linux, Linux kernel, Netapp A700s Firmware, Netapp Active Iq Unified Manager, Netapp Cloud Backup, Netapp Element Software and 16 more.

How do I fix CVE-2020-12653?

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-2020-12653 being exploited?

There is no known exploitation of CVE-2020-12653 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 DEBIAN-CVE-2020-12653, GHSA-gj62-72x5-vwvc, UBUNTU-CVE-2020-12653.