Description
inmail-show in mh-book 200605 allows local users to overwrite arbitrary files via a symlink attack on a (1) /tmp/inmail#####.log or (2) /tmp/inmail#####.stdin temporary file.
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 | mh-book | No fix yet | — |
| Debian 13 | mh-book | No fix yet | — |
| Debian 12 | mh-book | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mh-book | No fix yet | — |
| Ubuntu 26.04 LTS | mh-book | No fix yet | — |
| Ubuntu 25.10 | mh-book | No fix yet | — |
| Ubuntu 24.04 LTS | mh-book | No fix yet | — |
| Ubuntu 22.04 LTS | mh-book | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mh-book | No fix yet | — |
| Ubuntu 18.04 LTS | mh-book | No fix yet | — |
| Ubuntu 16.04 LTS | mh-book | No fix yet | — |