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Vulnerabilities

Vulnerability · CVE-2023-32246

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 con

Published Aug 16, 2025 · catalog updated Aug 15, 2026 · Linux Linux

Check if you run it

No confirmed exploitation is on record for CVE-2023-32246. EPSS is 0.18%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Version ranges on file
Affected products
vendor Linux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2

How to fix CVE-2023-32246

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-32246. EPSS is 0.18%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2 e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 16, 2025 · EUVD

    Detected

    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

  2. Aug 15, 2026 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2023-32246

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-32246

    30-day exploitation probability 0.18%

    first.org
  • EUVDVulnerability recordEUVD-2023-36503

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.