CVE-2026-59959
CVE-2026-59959 · SAIL: WebP decoder division by zero through malformed animated canvas metadata
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SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to version 1.0.2, the built-in WebP decoder can crash during loader initialization when processing a malformed animated WebP file with inconsistent container or `ANMF` frame metadata. In `sail_codec_load_init_v8_webp()` in `src/sail-codecs/webp/webp.c`, `WebPDemuxGetI` with `WEBP_FF_CANVAS_WIDTH` can return a zero `image_local->width`, which is then used as a divisor when calculating `bytes_per_pixel` from the image row size. The division happens before frame decoding and before generic image skeleton validation in `src/sail/sail_advanced.c`, causing an arithmetic fault and process termination. Applications accepting untrusted WebP images can consequently suffer denial of service; builds must include the affected WebP codec. This issue is fixed in version 1.0.2.
CVSS 4.8 · Moyenne · EPSS 0,1% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: system
Produits et versions concernés
sail
- Versions du logiciel
- < 1.0.2: Concernée
Aucun correctif publié
sail Debian:13
- Versions du logiciel
- 0.9.10-1
- 0.9.10-2
- 0.9.10-3
- 0.9.8-1
- 0.9.8-1+deb13u1
- 0.9.9-1
- 1.2.0-1
- Plages de versions concernées
- ECOSYSTEM: (−∞, +∞)
Aucun correctif publié
sail Debian:14
- Versions du logiciel
- 0.9.10-1
- 0.9.10-2
- 0.9.10-3
- 0.9.8-1
- 0.9.9-1
- Plages de versions concernées
- ECOSYSTEM: < 1.2.0-1
Mettez à jour vers 1.2.0-1