cve/2020/CVE-2020-28941.md

CVE-2020-28941

Description

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.

POC

Reference

• http://www.openwall.com/lists/oss-security/2020/11/19/5
• http://www.openwall.com/lists/oss-security/2020/11/19/5
• https://www.openwall.com/lists/oss-security/2020/11/19/3
• https://www.openwall.com/lists/oss-security/2020/11/19/3

Github

• https://github.com/Live-Hack-CVE/CVE-2020-28941