Description
An Out of Bounds flaw was discovered in htmodoc 1.9.12 in function parse_tree() in toc.cxx, this possibly leads to memory layout information leaking in the data. This might be used in a chain of vulnerability in order to reach code execution.
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 | htmldoc | 1.9.13-1 | — |
| Debian 13 | htmldoc | 1.9.13-1 | — |
| Debian 12 | htmldoc | 1.9.13-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | htmldoc | 1.9.7-1ubuntu0.3+esm1 | USN-7189-1 |
| Ubuntu Pro 18.04 LTS | htmldoc | 1.9.2-1ubuntu0.2+esm1 | USN-7189-1 |
| Ubuntu Pro 16.04 LTS | htmldoc | 1.8.27-8ubuntu1.1+esm2 | USN-7189-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | htmldoc | 1.8.27-8ubuntu1+esm3 | USN-7189-1 |
Advisories 1
- USN-7189-1 HTMLDOC vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026