CVE-2019-5609

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

In FreeBSD 12.0-STABLE before r350619, 12.0-RELEASE before 12.0-RELEASE-p9, 11.3-STABLE before r350619, 11.3-RELEASE before 11.3-RELEASE-p2, and 11.2-RELEASE before 11.2-RELEASE-p13, the bhyve e1000 device emulation used a guest-provided value to determine the size of the on-stack buffer without validation when TCP segmentation offload is requested for a transmitted packet. A misbehaving bhyve guest could overwrite memory in the bhyve process on the host.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
n/a	FreeBSD	before 12.0-RELEASE-p9; before 11.3-RELEASE-p2; and before 11.2-RELEASE-p13

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190910-0002/Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190910-0002/Third Party Advisory

Timeline

Published: Aug 30, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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