Description
The png_push_read_chunk function in pngpread.c in the progressive decoder in libpng 1.6.x through 1.6.9 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via an IDAT chunk with a length of zero.
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 | libpng1.6 | 1.6.10-1 | — |
| Debian 13 | libpng1.6 | 1.6.10-1 | — |
| Debian 12 | libpng1.6 | 1.6.10-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libpng16 | 1.6.26-1.1 | openSUSE-SU-2024:10050-1 |
Advisories 1
- openSUSE-SU-2024:10050-1 libpng16-16-1.6.26-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://sourceforge.net/projects/libpng/files/libpng16/patch-libpng16-vu684412.diff
- openSUSE-SU-2014:0358 vendor-advisory
- VU#684412 third-party-advisory