CVE-2026-31409

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-31409
In the Linux kernel, the following vulnerability has been resolved: ksmbd: unset conn->binding on failed binding request When a multichannel SMB2_SESSION_SETUP request with SMB2_SESSION_REQ_FLAG_BINDING fails ksmbd sets conn->binding = true but never clears it on the error path. This leaves the connection in a binding state where all subsequent ksmbd_session_lookup_all() calls fall back to the global sessions table. This fix it by clearing conn->binding = false in the error path.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/282343cf8a4a5a3603b1cb0e17a7083e4a593b03 Patch
https://git.kernel.org/stable/c/6260fc85ed1298a71d24a75d01f8b2e56d489a60 Patch
https://git.kernel.org/stable/c/6ebef4a220a1ebe345de899ebb9ae394206fe921 Patch
https://git.kernel.org/stable/c/7e8b270813079c785696bce8802a3f920665c88c
https://git.kernel.org/stable/c/89afe5e2dbea6e9d8e5f11324149d06fa3a4efca Patch
https://git.kernel.org/stable/c/9feb2d1bf86d9e5e66b8565f37f8d3a7d281a772 Patch
https://git.kernel.org/stable/c/d073870dab8f6dadced81d13d273ff0b21cb7f4e Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
History

01 Jun 2026, 17:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/7e8b270813079c785696bce8802a3f920665c88c -

20 May 2026, 16:15

Type Values Removed Values Added
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/282343cf8a4a5a3603b1cb0e17a7083e4a593b03 - () https://git.kernel.org/stable/c/282343cf8a4a5a3603b1cb0e17a7083e4a593b03 - Patch
References () https://git.kernel.org/stable/c/6260fc85ed1298a71d24a75d01f8b2e56d489a60 - () https://git.kernel.org/stable/c/6260fc85ed1298a71d24a75d01f8b2e56d489a60 - Patch
References () https://git.kernel.org/stable/c/6ebef4a220a1ebe345de899ebb9ae394206fe921 - () https://git.kernel.org/stable/c/6ebef4a220a1ebe345de899ebb9ae394206fe921 - Patch
References () https://git.kernel.org/stable/c/89afe5e2dbea6e9d8e5f11324149d06fa3a4efca - () https://git.kernel.org/stable/c/89afe5e2dbea6e9d8e5f11324149d06fa3a4efca - Patch
References () https://git.kernel.org/stable/c/9feb2d1bf86d9e5e66b8565f37f8d3a7d281a772 - () https://git.kernel.org/stable/c/9feb2d1bf86d9e5e66b8565f37f8d3a7d281a772 - Patch
References () https://git.kernel.org/stable/c/d073870dab8f6dadced81d13d273ff0b21cb7f4e - () https://git.kernel.org/stable/c/d073870dab8f6dadced81d13d273ff0b21cb7f4e - Patch

27 Apr 2026, 14:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 8.8

06 Apr 2026, 08:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-06 08:16

Updated : 2026-06-01 17:16

NVD link : CVE-2026-31409

Mitre link : CVE-2026-31409

CVE.ORG link : CVE-2026-31409

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo