Description (CNA)
HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107, function `pci_vtsock_proc_tx` in `virtio-sock` can lead to to uninitialized memory use. In this situation, there is a check for the return value to be less or equal to `VTSOCK_MAXSEGS`, but that check is not sufficient because the function can return `-1` if it finds an error it cannot recover from. Moreover, the negative return value will be used by `iovec_pull` in a while condition that can further lead to more corruption because the function is not designed to handle a negative `iov_len`. 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 af5eba2360a7351c08dfd9767d9be863a50ebaba.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| moby / hyperkit | affected 0.20210107 through 0.20210107 |
CWE
CWE-908
References
- https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/
- https://github.com/moby/hyperkit/pull/313
- https://github.com/moby/hyperkit/commit/af5eba2360a7351c08dfd9767d9be863a50ebaba
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.