CVE-2020-28941: An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9.

Security readout for executives and security teams

CVE-2020-28941 is a Linux kernel local denial-of-service issue in the Speakup accessibility driver. A local user on a system where the driver is available could crash or destabilize the system. It does not indicate remote access, data theft, or privilege escalation in the provided sources. Exposure is mainly Linux systems running affected kernels where the Speakup driver is present and usable by local users. Distribution kernels may differ because fixes can be backported, so version strings alone may be insufficient. Treat this as a routine but real availability risk for Linux fleets, especially shared systems. It is not a remote compromise signal, but kernel denial-of-service flaws can still affect service uptime and should be handled through normal kernel patch cycles. Mitigation focus: Apply vendor kernel security updates for affected Linux distributions.; Use a kernel containing upstream commit d4122754442799187d5d537a9c039a49a67e57f1.; Check Fedora, Debian, or relevant vendor advisories for corrected package versions..

Prepared

Jun 1, 2026, 02:43 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.