An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0
Published Dec 31, 2019
7.5
HIGHCVSS 3.1
EPSS 3.36%
Description
An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a "privileged guest user has many ways to cause similar DoS effect, without triggering this assert.
Affected products
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:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 26, 2024 · SSVC 2.0.3
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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.36% (0.03355) | 88.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.36% (0.03355) | 87.09th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.56% (0.00563) | 65.71th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.90% (0.01900) | 72.25th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.56% (0.00563) | 66.39th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.17% (0.00169) | 55.21th | v3 (v2023.03.01) |
| Jul 3, 2024 | 0.17% (0.00169) | 54.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00169) | 52.09th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.18% (0.07176) | 80.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.36% (0.05363) | 79.74th | v1 |
| Jan 6, 2022 | 5.36% (0.05363) | 79.54th | v1 |
| Sep 1, 2021 | 1.25% (0.01247) | 68.62th | v1 |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (5)
- https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html x_refsource_MISCExploitMailing ListThird Party Advisory
- https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html x_refsource_MISCMailing ListThird Party Advisory
- https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html x_refsource_MISCThird Party Advisory
- https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html x_refsource_MISCMailing ListPatchThird Party Advisory
- https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html | x_refsource_MISCExploitMailing ListThird Party Advisory | |
| https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html | x_refsource_MISCMailing ListThird Party Advisory | |
| https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html | x_refsource_MISCThird Party Advisory | |
| https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html | x_refsource_MISCMailing ListPatchThird Party Advisory | |
| https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html | x_refsource_MISC |
Change history (0)
No recorded changes yet.