A vulnerability was found in HyperKit up to 0.20210107. It has been rated as problematic. This issue affects the function pci_vtrnd_notify. The manipulation of the argument return with an unknown input leads to a uninitialized resource vulnerability. Using CWE to declare the problem leads to CWE-908. The product uses or accesses a resource that has not been initialized. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, the implementation of `qnotify` at `pci_vtrnd_notify` fails to check the return value of `vq_getchain`. This leads to `struct iovec iov;` being uninitialized and used to read memory in `len = (int) read(sc->vrsc_fd, iov.iov_base, iov.iov_len);` when an attacker is able to make `vq_getchain` fail. This issue may lead to a guest crashing the host causing a denial of service and, under certain circumstance, memory corruption. This issue is fixed in commit 41272a980197917df8e58ff90642d14dec8fe948.

The weakness was disclosed 02/18/2023 as GHSL-2021-054. The advisory is shared at securitylab.github.com. The identification of this vulnerability is CVE-2021-32845 since 05/12/2021. Technical details are known, but no exploit is available.

Applying the patch 41272a980197917df8e58ff90642d14dec8fe948 is able to eliminate this problem. The bugfix is ready for download at github.com.

The entries VDB-221404, VDB-221415 and VDB-221416 are pretty similar.

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• HyperKit

Version

• 0.20210107

License

• open-source

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• 🔍

CPE 2.2info

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• 🔍

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