FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

FreeBSD -- vt console buffer overflow

Affected packages
13.0 <= FreeBSD < 13.0_6
12.2 <= FreeBSD < 12.2_12


VuXML ID b1b6d623-83e4-11ec-90de-1c697aa5a594
Discovery 2022-01-11
Entry 2022-02-02

Problem Description:

Under certain conditions involving use of the highlight buffer while text is scrolling on the console, console data may overwrite data structures associated with the system console or other kernel memory.


Users with access to the system console may be able to cause system misbehaviour.


CVE Name CVE-2021-29632
FreeBSD Advisory SA-22:01.vt