CLSA-2026-1788344031
See a problem?- Import Source
- https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1788344031.json
- JSON Data
- https://api.osv.dev/v1/vulns/CLSA-2026-1788344031
- Upstream
- Published
- 2026-09-02T10:14:03Z
- Modified
- 2026-10-26T09:30:09Z
- Summary
- Fix CVE(s): CVE-2026-40930
- Details
-
- SECURITY UPDATE: chunk data smuggling in the APNG push-mode reader
- debian/patches/CVE-2026-40930.patch: consume the chunk body and the CRC field in the three inter-frame discard paths of png_push_read_chunk (pngpread.c), so that bytes inside an ignored chunk are no longer reinterpreted as a fresh chunk header on the next png_process_data call, and pass the real chunk length to png_ensure_sequence_number in png_push_read_IDAT (pngpread.c), so that an fdAT chunk shorter than its own sequence number no longer underflows idat_size and swallows the rest of the stream as frame data
- CVE-2026-40930
- SECURITY UPDATE: chunk data smuggling in the APNG push-mode reader
- References
Affected packages
TuxCare:Ubuntu:20.04 / libpng-dev
Package
- Name
- libpng-dev
- Purl
- pkg:deb/tuxcare/libpng-dev?distro=ubuntu-20.04
TuxCare:Ubuntu:20.04 / libpng-tools
Package
- Name
- libpng-tools
- Purl
- pkg:deb/tuxcare/libpng-tools?distro=ubuntu-20.04