| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2483-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.237-1 | fixed |
| bookworm | 6.1.137-1 | fixed |
| bookworm (security) | 6.1.140-1 | fixed |
| trixie | 6.12.33-1 | fixed |
| trixie (security) | 6.12.31-1 | fixed |
| sid | 6.12.35-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linux | source | stretch | (not affected) | | | |
| linux | source | buster | 4.19.160-1 | | | |
| linux | source | (unstable) | 5.9.11-1 | | | |
| linux-4.19 | source | stretch | 4.19.160-2~deb9u1 | | DLA-2483-1 | |
Notes
[stretch] - linux <not-affected> (Vulnerable code not present)
https://www.openwall.com/lists/oss-security/2020/11/19/3