QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2026-31539

Back to search

CVE-2026-31539

Published: Apr 24, 2026

Modified: May 11, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

In the Linux kernel, the following vulnerability has been resolved: smb: smbdirect: introduce smbdirect_socket.recv_io.credits.available The logic off managing recv credits by counting posted recv_io and granted credits is racy. That's because the peer might already consumed a credit, but between receiving the incoming recv at the hardware and processing the completion in the 'recv_done' functions we likely have a window where we grant credits, which don't really exist. So we better have a decicated counter for the available credits, which will be incremented when we posted new recv buffers and drained when we grant the credits to the peer.

VendorProductVersions

Linux

Linux

affected
5fb9b459b3686e366640edd4e62805ef7b4de927 - < e811e60e1cc79923c4388146eb1fa26a7482731e
affected
5fb9b459b3686e366640edd4e62805ef7b4de927 - < f99996870222b598914a1f49d7375dc23752c237
affected
5fb9b459b3686e366640edd4e62805ef7b4de927 - < 6e3c5052f9686192e178806e017b7377155f4bab

Linux

Linux

affected
6.18
unaffected
0 - < 6.18
unaffected
6.18.11 - <= 6.18.*
unaffected
6.19.1 - <= 6.19.*
unaffected
7.0 - <= *

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now