{"apiVersion":"1.0","identifier":"CVE-2026-72310","description":"In the Linux kernel, the following vulnerability has been resolved: smb: client: fix overflow in passthrough ioctl bounds check smb2_ioctl_query_info() validates the PASSTHRU_FSCTL response payload before copying it to userspace. The payload offset and length both come from 32-bit fields. The bounds check currently adds OutputOffset and qi.input_buffer_length directly, so the addition can wrap in 32-bit arithmetic before the result is compared against the response buffer length. A malicious server can use a large OutputOffset and a small OutputCount to make the wrapped sum pass the bounds check. The later copy_to_user() then reads from io_rsp + OutputOffset, outside the response buffer. Use size_add() for the offset plus length check so overflow is treated as out of bounds.","publishedAt":"2026-08-15T06:22:03","lastModifiedAt":"2026-08-17T06:18:34","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72310","cvssScore":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","epssProbability":0.00643,"riskScore":0.86,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72310","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72310","en":"https://www.redsauce.net/en/cves/CVE-2026-72310","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72310","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72310","de":"https://www.redsauce.net/de/cves/CVE-2026-72310","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72310","el":"https://www.redsauce.net/el/cves/CVE-2026-72310"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72310"}}