Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2026-31710

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/05/2026
Last modified:
06/05/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> smb: client: fix dir separator in SMB1 UNIX mounts<br /> <br /> When calling cifs_mount_get_tcon() with SMB1 UNIX mounts,<br /> @cifs_sb-&gt;mnt_cifs_flags needs to be read or updated only after<br /> calling reset_cifs_unix_caps(), otherwise it might end up with missing<br /> CIFS_MOUNT_POSIXACL and CIFS_MOUNT_POSIX_PATHS bits.<br /> <br /> This fixes the wrong dir separator used in paths caused by the missing<br /> CIFS_MOUNT_POSIX_PATHS bit in cifs_sb_info::mnt_cifs_flags.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 7.0.1 (including) 7.0.2 (excluding)
cpe:2.3:o:linux:linux_kernel:7.0:-:*:*:*:*:*:*
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:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools