CVE-2020-27673 — Uncontrolled Resource Consumption in Kernel

CWE-400 — Uncontrolled Resource Consumption9 documents8 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 89.67%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux KernelXENDebian Linux+1 more
Timeline
PublishedOct 22
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel2.6.12 — 4.4.244+6
▶Debianlinux/linux_kernel< 5.9.6-1+3
▶NVDxen/xen4.14.0
▶NVDopensuse/leap15.1, 15.2+1

Also affects: Debian Linux 9.0

Patches

Patch: git.kernel.org ↗Patch: github.com ↗Patch: xenbits.xen.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-hj67-hpcv-3wx5: An issue was discovered in the Linux kernel through 5↗2022-05-24
▶
OSV
CVE-2020-27673: An issue was discovered in the Linux kernel through 5↗2020-10-22
▶
CVEList
CVE-2020-27673: An issue was discovered in the Linux kernel through 5↗2020-10-22
▶

📋Vendor Advisories

3
Ubuntu
Linux kernel vulnerabilities↗2021-02-25
▶
Red Hat
kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)↗2020-10-20
▶
Debian
CVE-2020-27673: linux - An issue was discovered in the Linux kernel through 5.9.1, as used with Xen thro...↗2020
▶

💬Community

2
Bugzilla
CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)↗2020-10-23
▶
Bugzilla
CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332) [fedora-all]↗2020-10-23
▶