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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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-02-17T00:00:00

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

Reserved: 2021-05-12T00:00:00

Link: CVE-2021-32845

cve-icon Vulnrichment

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cve-icon NVD

Status : Analyzed

Published: 2023-02-17T23:15:11.963

Modified: 2023-06-26T17:47:09.283

Link: CVE-2021-32845

cve-icon Redhat

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