CVE-2026-110712
CVE-2026-110712 · libsmb2 through 6.2 Heap Out-of-Bounds Read via smb2_decode_file_all_info
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_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.
CVSS 7.1 · Alta · EPSS 0,4%
- 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-file-info.c#L202
- https://github.com/sahlberg/libsmb2/commit/57bee9fb941a39307145b82e4dd1718862f30a74
- https://github.com/sahlberg/libsmb2
- https://www.vulncheck.com/advisories/libsmb2-through-6.2-heap-out-of-bounds-read-via-smb2-decode-file-all-info
- https://nvd.nist.gov/vuln/detail/CVE-2026-110712