Description
In libsixel v1.8.2, there is an infinite loop in the function sixel_decode_raw_impl() in the file fromsixel.c, as demonstrated by sixel2png.
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 | libsixel | 1.8.2-2 | — |
| Debian 13 | libsixel | 1.8.2-2 | — |
| Debian 12 | libsixel | 1.8.2-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libsixel | No fix yet | — |
| Ubuntu 16.04 LTS | libsixel | No fix yet | — |