CVE-2026-31612

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

24/04/2026

Last modified:

29/04/2026

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate EaNameLength in smb2_get_ea() smb2_get_ea() reads ea_req->EaNameLength from the client request and passes it directly to strncmp() as the comparison length without verifying that the length of the name really is the size of the input buffer received. Fix this up by properly checking the size of the name based on the value received and the overall size of the request, to prevent a later strncmp() call to use the length as a "trusted" size of the buffer. Without this check, uninitialized heap values might be slowly leaked to the client.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.15 (including)	6.6.136 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.83 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.18.24 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.19 (including)	6.19.14 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	7.0 (including)	7.0.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-31612

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools