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Vulnerabilities

Vulnerability · CVE-2023-32249

In the Linux kernel, the following vulnerability has been resolved: ksmbd: not allow guest user on multichannel This patch return STATUS_NOT_SUPPORTED if binding session is guest.

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

Check if you run it

No confirmed exploitation is on record for CVE-2023-32249. EPSS is 0.36%. 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
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.36%
Remediation
Version ranges on file
Affected products
vendor Linux Linux f5a544e3bab78142207e0242d22442db85ba1eff <ed76d3a8910be06cd4e4ba63bf6075bf903945a1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: not allow guest user on multichannel This patch return STATUS_NOT_SUPPORTED if binding session is guest.

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 f5a544e3bab78142207e0242d22442db85ba1eff <ed76d3a8910be06cd4e4ba63bf6075bf903945a1f5a544e3bab78142207e0242d22442db85ba1eff <ed76d3a8910be06cd4e4ba63bf6075bf903945a1

How to fix CVE-2023-32249

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-2023-32249. EPSS is 0.36%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux f5a544e3bab78142207e0242d22442db85ba1eff <ed76d3a8910be06cd4e4ba63bf6075bf903945a1 f5a544e3bab78142207e0242d22442db85ba1eff <ed76d3a8910be06cd4e4ba63bf6075bf903945a1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.36%. 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: not allow guest user on multichannel This patch return STATUS_NOT_SUPPORTED if binding session is guest.

  2. Aug 15, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: not allow guest user on multichannel This patch return STATUS_NOT_SUPPORTED if binding session is guest.

Sources

  • CVE.orgVulnerability recordCVE-2023-32249

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-32249

    30-day exploitation probability 0.36%

    first.org
  • EUVDVulnerability recordEUVD-2023-36506

    In the Linux kernel, the following vulnerability has been resolved: ksmbd: not allow guest user on multichannel This patch return STATUS_NOT_SUPPORTED if binding session is guest.

    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.