CVE-2023-32246

MEDIUM EPSS 5.3%
Published Aug 16, 202510mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 16, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: call rcu_barrier() in ksmbd_server_exit() racy issue is triggered the bug by racing between closing a connection and rmmod. In ksmbd, rcu_barrier() is not called at module unload time, so nothing prevents ksmbd from getting unloaded while it still has RCU callbacks pending. It leads to trigger unintended execution of kernel code locally and use to defeat protections such as Kernel Lockdown

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <5.15.111
linuxlinux_kernel*≥5.16  –  <6.1.28
linuxlinux_kernel*≥6.2  –  <6.2.15
linuxlinux_kernel*≥6.3  –  <6.3.2

References 5

  • git.kernel.org https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5
    Patch