Description
An issue was discovered in apng2gif 1.7. There is an integer overflow resulting in a heap-based buffer over-read, related to the load_apng function and the imagesize variable.
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 | apng2gif | 1.8-0.1 | — |
| Debian 13 | apng2gif | 1.8-0.1 | — |
| Debian 12 | apng2gif | 1.8-0.1 | — |
| Debian 9 | apng2gif | 1.8-0.1~deb9u1 | DLA-2911-1 |
| Debian 8 | apng2gif | 1.5-3+deb8u1 | DLA-2165-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | apng2gif | 1.5-1+deb7u1 | DLA-981-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | apng2gif | No fix yet | — |
| Ubuntu 16.04 LTS | apng2gif | 1.5-3+deb8u1build0.16.04.1 | USN-4513-1 |
Advisories 4
- USN-4513-1 apng2gif vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-981-1 apng2gif - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2165-1 apng2gif - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2911-1 apng2gif - security update Debian Security (DSA / DLA) · Mar 9, 2026