CVE-2026-5165

Summary

A flaw was found in virtio-win, specifically within the VirtIO Block (BLK) device. When the device undergoes a reset, it fails to properly manage memory, resulting in a use-after-free vulnerability. This issue could allow a local attacker to corrupt system memory, potentially leading to system instability or unexpected behavior.

Affected Software

Weaknesses

• CWE-825: Expired Pointer Dereference

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://access.redhat.com/security/cve/CVE-2026-5165
• https://bugzilla.redhat.com/show_bug.cgi?id=2453015
• https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1493

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