CVE-2026-110713
CVE-2026-110713 · libsmb2 through 6.2 Heap Out-of-Bounds Read via File System Info Decoders
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_fs_volume_info and smb2_decode_file_fs_attribute_info that allows malicious SMB servers to read past reply buffers. Attackers controlling a server or intercepting unsigned sessions can send crafted QUERY_INFO replies with missing or oversized name lengths to crash the client.
CVSS 7.1 · Alta · EPSS 0,5%
- Publicación
- Actualización
Pila tecnológica: system
Productos y versiones afectados
libsmb2
- Versiones
- ≥ 0, ≤ 6.2: Afectada (custom)
Sin corrección publicada
libsmb2 Debian:13
- Versiones
- 6.2+dfsg-2
- 6.2+dfsg-2+deb13u1
- 6.2+dfsg-3
- 6.2+dfsg-4
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
libsmb2 Debian:14
- Versiones
- 6.2+dfsg-2
- 6.2+dfsg-3
- 6.2+dfsg-4
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
libsmb2 Ubuntu:26.10
- Versiones
- 6.2+dfsg-3
- 6.2+dfsg-4
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
libsmb2 Ubuntu:26.04:LTS
- Versiones
- 6.2+dfsg-2
- 6.2+dfsg-3
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
Fuentes originales
- https://hackmd.io/@haind-pwn/libsmb2-query-info-reply-oob-read
- https://github.com/sahlberg/libsmb2/blob/d67e213a5c4e7e4969fd81f0b95e4ca5831fbba1/lib/smb2-data-filesystem-info.c#L71
- https://github.com/sahlberg/libsmb2/commit/dd0bbdee24bb56f7ec95431afc07ce0a666533f7
- https://github.com/sahlberg/libsmb2
- https://www.vulncheck.com/advisories/libsmb2-through-6.2-heap-out-of-bounds-read-via-file-system-info-decoders
- https://nvd.nist.gov/vuln/detail/CVE-2026-110713