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6.0
VM Host Denial of Service through PCIe Link Buffer Overflow
CVE-2024-21961
Summary
An attacker with access to a virtual machine can disrupt the host system, causing it to become unavailable. This could lead to downtime and lost productivity. To mitigate this risk, ensure that access controls are in place to restrict unauthorized access to virtual machines.
Original title
Improper restriction of operations within the bounds of a memory buffer in PCIe® Link could allow an attacker with access to a guest virtual machine to potentially perform a denial of service attac...
Original description
Improper restriction of operations within the bounds of a memory buffer in PCIe® Link could allow an attacker with access to a guest virtual machine to potentially perform a denial of service attack against the host resulting in loss of availability.
nvd CVSS4.0
6.0
Vulnerability type
CWE-119
Buffer Overflow
Published: 13 Feb 2026 · Updated: 10 Mar 2026 · First seen: 6 Mar 2026