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.
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Mon, 10 Mar 2025 21:15:00 +0000
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-03-10T21:09:53.340Z
Reserved: 2021-05-12T00:00:00.000Z
Link: CVE-2021-32845

Updated: 2024-08-03T23:33:56.108Z

Status : Modified
Published: 2023-02-17T23:15:11.963
Modified: 2024-11-21T06:07:52.230
Link: CVE-2021-32845

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