CVE-2020-10720 Use after free in Kernel

What is CVE-2020-10720?

CVE-2020-10720 is a medium-severity use after free vulnerability in Linux kernel, published on 3 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A flaw was found in the Linux kernel's implementation of GRO in versions before 5.2. This flaw allows an attacker with local access to crash the system.

Weakness: CWE-416

Which versions are affected by CVE-2020-10720?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2020-10720?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2020-10720 being exploited?

There is no known exploitation of CVE-2020-10720 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2020-10720, GHSA-hx2j-322m-8267, UBUNTU-CVE-2020-10720.