Li Quang

Name of the Vulnerable Software and Affected Versions: QEMU (affected versions not specified) Description: The issue is related to a memory leak in the `pvrdma realize` function in QEMU's PVRDMA hardware emulator. This leak occurs after an initialization error. The problem is associated with insufficient resource release after its valid lifetime has expired. Exploitation of this issue may allow an attacker to cause a denial of service. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: QEMU (affected versions not specified) Description: The issue is related to the hw/rdma/rdma backend.c component in QEMU, which allows guest OS users to trigger out-of-bounds access. This can be achieved via a PvrdmaSqWqe ring element with a large `num sge` value, potentially leading to a denial of service. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: QEMU (affected versions not specified) Description: The issue is related to errors in pointer dereferencing in the PVRDMA emulator hardware component of QEMU. It may allow a remote attacker to cause a denial of service by creating CQ/QP objects, potentially leading to a NULL pointer dereference or excessive memory allocation in functions such as `create cq ring` or `create qp rings`. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: QEMU (affected versions not specified) Description: The issue is related to the create cq and create qp functions in the PVRDMA emulator of QEMU, which is associated with insufficient resource release after its valid lifetime has expired. This can be exploited by an attacker to cause a denial of service by creating CQ/QP objects. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: QEMU (affected versions not specified) Description: The issue is related to the `pvrdma idx ring has` function in the PVRDMA emulator of QEMU, which can lead to an infinite loop due to an unreachable exit condition. This can be exploited by a remote attacker to cause a denial of service. The problem arises from un-checked return values in `hw/rdma/vmw/pvrdma dev ring.c`, specifically the mishandling of `-1` return values. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Name of the Vulnerable Software and Affected Versions: QEMU (affected versions not specified) Description: The issue is related to errors in pointer dereferencing in the uar read and uar write functions of the PVRDMA emulator's virtual network adapter in QEMU. This can be exploited by a remote attacker to cause a denial of service. The problem arises because QEMU does not implement a read operation, such as uar read, which by analogy to uar write, allows attackers to cause a denial of service through a NULL pointer dereference. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.