Description
A stack-based buffer under-read in htmldoc before 1.9.12, allows attackers to cause a denial of service via a crafted BMP image to image_load_bmp.
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 | — |
| Debian 9 | htmldoc | 1.8.27-8+deb9u2 | DLA-2928-1 |
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 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Subscription Management Tool 11 SP3 | htmldoc | 1.8.27-170.4.3.1 | SUSE-SU-2021:14869-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | htmldoc | 1.9.12-2.1 | openSUSE-SU-2024:11611-1 |
Advisories 4
- USN-7189-1 HTMLDOC vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2928-1 htmldoc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2021:14869-1 Security update for htmldoc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11611-1 htmldoc-1.9.12-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025