Vulnerability in Linux Kernel
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 (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel — versions 5.10
- Xen
- Debian Linux — versions 9.0
- openSUSE Leap — versions 15.1, 15.2
References
- xenbits.xen.org/xsa/advisory-332.html (Patch, Third Party Advisory)
- github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070 (Patch, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202011-06 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/12/msg00015.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/12/msg00027.html (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/01/19/6 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27673?
- CVE-2020-27673 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2020-10-22.
- How severe is CVE-2020-27673?
- Medium severity. CVSS v3 base score is 5.5 out of 10.