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Vulnerabilities

Vulnerability · CVE-2023-54081

In the Linux kernel, the following vulnerability has been resolved: xen: speed up grant-table reclaim When a grant entry is still in use by the remote domain, Linux must put it on

Published Dec 24, 2025 · catalog updated May 11, 2026 · Linux Linux

Last checked Oct 29, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-54081. EPSS is 0.21%. 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.

Same product and reporting

Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.21%
Remediation
Version ranges on file
Affected products
vendor Linux Linux 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a <c04e9894846c663f3278a414f34416e6e45bbe68

In the Linux kernel, the following vulnerability has been resolved: xen: speed up grant-table reclaim When a grant entry is still in use by the remote domain, Linux must put it on a deferred list. Normally, this list is very short, because the PV network and block protocols expect the backend to unmap the grant first. However, Qubes OS's GUI protocol is subject to the constraints of the X Window System, and as such winds up with the frontend unmapping the window first. As a result, the list can grow very large, resulting in a massive memory leak and eventual VM freeze. To partially solve this

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 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a <c04e9894846c663f3278a414f34416e6e45bbe68569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a <c04e9894846c663f3278a414f34416e6e45bbe68

How to fix CVE-2023-54081

  • Upgrade

    CVE-2023-54081 lists a fix boundary at c04e9894846c663f3278a414f34416e6e45bbe68. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a <c04e9894846c663f3278a414f34416e6e45bbe68

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

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-2023-54081. EPSS is 0.21%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a <c04e9894846c663f3278a414f34416e6e45bbe68 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a <c04e9894846c663f3278a414f34416e6e45bbe68. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.21%. 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. Dec 24, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: xen: speed up grant-table reclaim When a grant entry is still in use by the remote domain, Linux must put it on a deferred list. Normally, this list is very short, because the PV network and block protocols expect the backend to unmap the grant first. However, Qubes OS's GUI protocol is subject to the constraints of the X Window S

  2. May 11, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: xen: speed up grant-table reclaim When a grant entry is still in use by the remote domain, Linux must put it on a deferred list. Normally, this list is very short, because the PV network and block protocols expect the backend to unmap the grant first. However, Qubes OS's GUI protocol is subject to the constraints of the X Window S

Sources

  • CVE.orgVulnerability recordCVE-2023-54081

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-54081

    30-day exploitation probability 0.21%

    first.org
  • EUVDVulnerability recordEUVD-2023-60364

    In the Linux kernel, the following vulnerability has been resolved: xen: speed up grant-table reclaim When a grant entry is still in use by the remote domain, Linux must put it on a deferred list. Normally, this list is very short, because the PV network and block protocols expec

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 29, 2026
  • FIRST EPSSOct 29, 2026
  • EUVDOct 29, 2026