Description
A heap buffer overflow in image_set_mask function of HTMLDOC before 1.9.15 allows an attacker to write outside the buffer boundaries.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| michaelrsweet | htmldoc | 1.9.14 | 1.9.15 |
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 | 1.9.15-1 | — |
| Debian 13 | htmldoc | 1.9.15-1 | — |
| Debian 12 | htmldoc | 1.9.15-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | htmldoc | 1.9.17-1ubuntu0.1~esm1 | USN-7225-1 |
| Ubuntu Pro 22.04 LTS | htmldoc | 1.9.15-1ubuntu0.1~esm1 | USN-7225-1 |
| Ubuntu Pro 20.04 LTS | htmldoc | 1.9.7-1ubuntu0.3+esm2 | USN-7225-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | htmldoc | 1.9.2-1ubuntu0.2+esm2 | USN-7225-1 |
| Ubuntu Pro 16.04 LTS | htmldoc | 1.8.27-8ubuntu1.1+esm3 | USN-7225-1 |
| Ubuntu Pro 14.04 LTS | htmldoc | 1.8.27-8ubuntu1+esm4 | USN-7225-1 |
Advisories 1
- USN-7225-1 HTMLDOC vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026