| Name | CVE-2021-33656 |
| Description | When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds. |
| 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-3131-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | buster | 4.19.249-2 | vulnerable |
| buster (security) | 4.19.304-1 | fixed |
| bullseye | 5.10.209-2 | fixed |
| bullseye (security) | 5.10.216-1 | fixed |
| bookworm | 6.1.76-1 | fixed |
| bookworm (security) | 6.1.90-1 | fixed |
| sid, trixie | 6.7.12-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linux | source | buster | 4.19.260-1 | | DLA-3131-1 | |
| linux | source | bullseye | 5.10.127-1 | | | |
| linux | source | (unstable) | 5.14.6-1 | | | |
Notes
https://git.kernel.org/linus/ff2047fb755d4415ec3c70ac799889371151796d (v5.12-rc1)