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
Published Aug 29, 2019
7.5
HIGHCVSS 3.1
EPSS 1.29%
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.
Affected products
- Vendor n/a Product FreeBSD Defaultn/a
- Version and before 11.2-RELEASE-p13StatusaffectedConstraints-
- Version before 11.3-RELEASE-p2StatusaffectedConstraints-
- Version before 12.0-RELEASE-p9StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n/a | FreeBSD | n/a |
|
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.2
- 11.3
- 11.3
- 11.3
- 11.3
- 11.3
- 12.0
- 12.0
- 12.0
- 12.0
- 12.0
- 12.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.29% (0.01293) | 69.24th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.29% (0.01293) | 69.00th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.09% (0.00090) | 39.04th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.09% (0.00090) | 37.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00100) | 39.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.74% (0.02742) | 63.06th | v1 |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (2)
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.asc x_refsource_CONFIRMPatchVendor Advisory
- https://security.netapp.com/advisory/ntap-20190910-0002/ x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.asc | x_refsource_CONFIRMPatchVendor Advisory | |
| https://security.netapp.com/advisory/ntap-20190910-0002/ | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.