CVE-2020-28941

Medium

An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.

Package Linux Kernel
Published 2020-11-19
Last modified 2026-05-29
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-763

CVE-2020-28941 is a Release of Invalid Pointer or Reference vulnerability

What is Release of Invalid Pointer or Reference?

The product attempts to return a memory resource to the system but calls the wrong release function. Learn more on MITRE CWE

References

8 total
Showing 5 of 8 references View all on NVD

Frequently asked questions

  • What is CVE-2020-28941?

    CVE-2020-28941 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Release of Invalid Pointer or Reference flaw (CWE-763) . CVE-2020-28941 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2020-28941?

    CVE-2020-28941 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2020-28941?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-28941 patch availability.

  • Is CVE-2020-28941 actively exploited?

    No. CVE-2020-28941 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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