| Name | CVE-2021-40648 |
| Description | In man2html 1.6g, a filename can be created to overwrite the previous size parameter of the next chunk and the fd, bk, fd_nextsize, bk_nextsize of the current chunk. The next chunk is then freed later on, causing a freeing of an arbitrary amount of memory. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1062069 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| man2html (PTS) | jessie | 1.6g-7 | vulnerable |
| stretch | 1.6g-9 | vulnerable | |
| buster | 1.6g-11 | vulnerable | |
| bullseye, bookworm | 1.6g-14 | vulnerable | |
| sid, trixie | 1.6g-16 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| man2html | source | jessie | (unfixed) | end-of-life | ||
| man2html | source | stretch | (unfixed) | end-of-life | ||
| man2html | source | (unstable) | (unfixed) | unimportant | 1062069 |
https://gist.github.com/untaman/cb58123fe89fc65e3984165db5d40933
Negligible impact and potentially disputed (cf. gist comments)