CVE-2025-22040

HIGH EPSS 42.9%
Published Apr 16, 20251y ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
High
Find Similar
Published Apr 16, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix session use-after-free in multichannel connection There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
42.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.1.134
linuxlinux_kernel*≥6.2  –  <6.6.87
linuxlinux_kernel*≥6.7  –  <6.12.23
linuxlinux_kernel*≥6.13  –  <6.13.11
linuxlinux_kernel*≥6.14  –  <6.14.2
debiandebian_linux11.0any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345db
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345db
    Patch