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CVE-2020-27673
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service…
Medium5.5EPSS 0.41%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.41% · top 64% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (9)
- https://xenbits.xen.org/xsa/advisory-332.html (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070 (opens in a new tab)x_refsource_MISCx_transferred
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070 (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2020:1783 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2020:1844 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- GLSA-202011-06 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20210119 Xen Security Advisory 332 v4 (CVE-2020-27673) - Rogue guests can cause DoS of Dom0 via high frequency events (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-27673)Record last updated .