CVE-2026-64257 smb: client: reject overlapping data areas in SMB2 responses

🗓️ 25 Jul 2026 08:49:09Reported by GoogleType

osv

osv🔗 osv.dev👁 4 Views

Linux kernel smb client rejects SMB2 responses with overlapping data areas by tracking overlap.

Reporter	Title	Published	Views	Family All 10
Circl	CVE-2026-64257	25 Jul 202609:48	–	circl
CVE	CVE-2026-64257	25 Jul 202608:49	–	cve
Cvelist	CVE-2026-64257 smb: client: reject overlapping data areas in SMB2 responses	25 Jul 202608:49	–	cvelist
Debian CVE	CVE-2026-64257	25 Jul 202608:49	–	debiancve
EUVD	EUVD-2026-48969	25 Jul 202608:49	–	euvd
NVD	CVE-2026-64257	25 Jul 202610:17	–	nvd
OSV	UBUNTU-CVE-2026-64257	27 Jul 202600:00	–	osv
Positive Technologies	PT-2026-64478	25 Jul 202600:00	–	ptsecurity
SUSE CVE	SUSE CVE-2026-64257	25 Jul 202616:47	–	susecve
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-64257	27 Jul 202600:00	–	nessus

Source	Link
git	www.git.kernel.org/stable/c/36bfa52459e45c0d5b668de2f1c91f6dc5c67775
git	www.git.kernel.org/stable/c/445ece263131780dee273d727a4d6f11934feec7
git	www.git.kernel.org/stable/c/4a9d2657d3e05f6ed09c148cb127b4e58702275f
git	www.git.kernel.org/stable/c/57cba95f0e97c6f6e45e6731da30aff091bd7460
git	www.git.kernel.org/stable/c/8986c932905ea508d66da421eb2eb6e676ace1fe
git	www.git.kernel.org/stable/c/fdafa1e68dc75045b7b617e6e7d2854950804d83
github	www.github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64257.json
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-64257
git	www.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

28 Jul 2026 04:02Current

5.8Medium risk

Vulners AI Score5.8

CVSS 3.19.1

EPSS0.00672

linux kernel samba protocol data area overlap response handling length compatibility