CVE-2026-31537

smb: server: make use of smbdirect_socket.send_io.bcredits

published April 24, 2026

CVSS
—
EPSS
0%
Percentile
4.8
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

smb: server: make use of smbdirect_socket.send_io.bcredits

It turns out that our code will corrupt the stream of

reassabled data transfer messages when we trigger an

immendiate (empty) send.

In order to fix this we'll have a single 'batch' credit per

connection. And code getting that credit is free to use

as much messages until remaining_length reaches 0, then

the batch credit it given back and the next logical send can

happen.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00160 · 4.8th percentile
Published
2026-04-24T14:30Z
EPSS history
Timeline
  • 24 APR 14:30Z
    smb: server: make use of smbdirect_socket.send_io.bcredits
    cvelistv5