Linux Kernel up to 5.9.9 Speakup Driver spk_ttyio.c denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.9.9 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file drivers/accessibility/speakup/spk_ttyio.c of the component Speakup Driver. Such manipulation leads to denial of service. This vulnerability is documented as CVE-2020-28941. The attack needs to be performed locally. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.9.9 (Operating System). It has been rated as problematic. Affected by this issue is an unknown code of the file drivers/accessibility/speakup/spk_ttyio.c of the component Speakup Driver. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was released 11/19/2020. The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2020-28941. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 247764 (Linux Distros Unpatched Vulnerability : CVE-2020-28941), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the vulnerability database at Tenable (247764). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

ADP CISA Base Score: 5.5
ADP CISA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: 247764
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2020-28941

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

11/19/2020 🔍
11/19/2020 +0 days 🔍
11/19/2020 +0 days 🔍
05/30/2026 +2018 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2020-28941 (🔍)
GCVE (CVE): GCVE-0-2020-28941
GCVE (VulDB): GCVE-100-165176

Entryinfo

Created: 11/19/2020 22:54
Updated: 05/30/2026 16:58
Changes: 11/19/2020 22:54 (41), 12/09/2020 11:41 (5), 12/09/2020 11:43 (18), 08/12/2025 02:42 (17), 05/30/2026 16:58 (12)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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