Threats Tagged 'cve-2024-2494'

A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points. Passing a negative length to the g_new0 function results in a crash due to the negative length being treated as a huge positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by causing the libvirt daemon to crash.

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A vulnerability in the RPC library APIs of libvirt allows a local, unprivileged user to cause a denial of service by crashing the libvirt daemon. The issue arises because the RPC server deserialization code allocates memory for arrays before validating that the length is non-negative. Passing a negative length to the g_new0 function leads to a crash due to an unbounded memory allocation attempt. This flaw affects multiple versions of libvirt and has been assigned CVE-2024-2494 with a CVSS score of 6.2 (medium severity). Official patches are available from Red Hat and Ubuntu to address this issue.

An off-by-one error in the udevListInterfacesByStatus() function of libvirt can cause the libvirt daemon to crash when the number of interfaces exceeds the size of the names array. This vulnerability allows an unprivileged client to trigger a denial of service (DoS) by sending specially crafted data to the daemon. The issue does not allow privilege escalation or code execution but can disrupt virtualization services. A patch is available from Red Hat to address this issue.