CVE-2026-117556
CVE-2026-117556 · zchunk before 1.5.5 Heap Out-of-Bounds Read via read_preface()
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
zchunk before 1.5.5 contains a heap out-of-bounds read vulnerability in read_preface() in src/lib/header.c that passes the total header length instead of remaining bytes to compint parsing functions. Attackers can supply a crafted .zck file whose header ends inside a compressed integer, causing reads past the heap header buffer and crashing the application.
CVSS 5.3 · Media · Corrección disponible
- Publicación
- Actualización
Productos y versiones afectados
zchunk
- Versiones
- ≥ 0, < 1.5.5: Afectada (semver)
Actualiza a 1.5.5
Fuentes originales
- https://github.com/zchunk/zchunk/issues/119
- https://github.com/zchunk/zchunk
- https://github.com/zchunk/zchunk/commit/02b371a64bf98245df97315d07c684a0ca5ea1df
- https://github.com/zchunk/zchunk/releases/tag/1.5.5
- https://github.com/zchunk/zchunk/blob/1.5.4/src/lib/header.c#L167
- https://www.vulncheck.com/advisories/zchunk-before-1.5.5-heap-out-of-bounds-read-via-read-preface
- https://nvd.nist.gov/vuln/detail/CVE-2026-117556