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Back to active CVEs
Medium · CVSS 5.5CVE-2022-49774

KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign()CVE-2022-49774

Answer in brief

CVE-2022-49774 records a Medium severity (CVSS 5.5) vulnerability in KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 1, 2025Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.5
Exploitation
Not marked as known exploited
Affected software
6 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=2fd6df2f2b47d4301b1ee0fe9d627d1c061a5988 <d76f46f47dfde220712d1420ee5dbc546c8fc674 || >=2fd6df2f2b47d4301b1ee0fe9d627d1c061a5988 <7353633814f6e5b4899fb9ee1483709d6bb0e1cdd76f46f47dfde220712d1420ee5dbc546c8fc674, 7353633814f6e5b4899fb9ee1483709d6bb0e1cd
Linux/Linuxgeneric5.19Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to d76f46f47dfde220712d1420ee5dbc546c8fc674 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    May 1, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign() Should not call eventfd_ctx_put() in case of error. [Introduce new goto target instead. - Paolo]

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
NVD-CWE-noinfo
Source
CVE List V5
Source checked
Nov 5, 2026
References
2 linked sources
Open source record