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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | man2html | No fix yet | — |
| Debian 13 | man2html | No fix yet | — |
| Debian 12 | man2html | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | man2html | No fix yet | — |
| Ubuntu 26.04 LTS | man2html | No fix yet | — |
| Ubuntu 25.10 | man2html | No fix yet | — |
| Ubuntu 24.04 LTS | man2html | No fix yet | — |
| Ubuntu 22.04 LTS | man2html | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | man2html | No fix yet | — |
| Ubuntu 18.04 LTS | man2html | No fix yet | — |
| Ubuntu 16.04 LTS | man2html | No fix yet | — |