CVE-2026-31608

smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()

Critical · published April 24, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
51.4
In the wild
Unconfirmed
What it is

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

smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()

smb_direct_flush_send_list() already calls smb_direct_free_sendmsg(),

so we should not call it again after post_sendmsg()

moved it to the batch list.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00671 · 51.4th percentile
Published
2026-04-24T14:42Z
EPSS history
Timeline
  • 24 APR 14:42Z
    smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()
    cvelistv5