Linux Kernel up to 5.1 GRO use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.1 and classified as critical. Affected by this issue is some unknown functionality of the component GRO. The manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2020-10720. Local access is required to approach this attack. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.1. It has been rated as critical. This issue affects an unknown part of the component GRO. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability. The summary by CVE is:

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.

The weakness was disclosed 09/03/2020 as Bug 1781204 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2020-10720 since 03/20/2020. Attacking locally is a requirement. A simple authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 247464 (Linux Distros Unpatched Vulnerability : CVE-2020-10720), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (247464). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 247464
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2020-10720

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.2

Timelineinfo

03/20/2020 🔍
09/03/2020 +167 days 🔍
09/04/2020 +1 days 🔍
08/10/2025 +1801 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1781204
Status: Confirmed

CVE: CVE-2020-10720 (🔍)
GCVE (CVE): GCVE-0-2020-10720
GCVE (VulDB): GCVE-100-160667

Entryinfo

Created: 09/04/2020 06:44
Updated: 08/10/2025 23:01
Changes: 09/04/2020 06:44 (41), 09/04/2020 06:49 (17), 08/10/2025 21:28 (21), 08/10/2025 23:01 (5)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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