CVE-2020-27673
published 2020-10-22CVE-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…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.41%
34.1th percentile
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.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 5.9.6-1 (bookworm) | linux 5.9.6-1 (bookworm) |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 0 < 5.9.6-1 | 5.9.6-1 |
| linux | linux_kernel | >= 2.6.12 < 4.4.244 | 4.4.244 |
| linux | linux_kernel | >= 4.10.0 < 4.14.207 | 4.14.207 |
| linux | linux_kernel | >= 4.15.0 < 4.19.155 | 4.19.155 |
| linux | linux_kernel | >= 4.20.0 < 5.4.75 | 5.4.75 |
| linux | linux_kernel | >= 4.5.0 < 4.9.244 | 4.9.244 |
| linux | linux_kernel | >= 5.5.0 < 5.9.5 | 5.9.5 |
| opensuse | leap | — | — |
| opensuse | leap | — | — |
| xen | xen | <= 4.14.0 | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu4.1MEDIUM
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GHSA
GHSA-hj67-hpcv-3wx5: An issue was discovered in the Linux kernel through 5
ghsa_unreviewed·2022-05-24
CVE-2020-27673 [MEDIUM] CWE-400 GHSA-hj67-hpcv-3wx5: An issue was discovered in the Linux kernel through 5
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.
OSV
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
osv·2021-02-25·CVSS 4.1
CVE-2020-25656 [MEDIUM] linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
It was discovered that the console keyboard driver in the Linux kernel
contained a race condition. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2020-25656)
Minh Yuan discovered that the tty driver in the Linux kernel contained race
conditions when handling fonts. A local attacker could possibly use this to
expose sensitive information (kernel memory). (CVE-2020-25668)
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
Kiyin (尹亮) discovered that the perf subsystem in the Linu
OSV
CVE-2020-27673: An issue was discovered in the Linux kernel through 5
osv·2020-10-22·CVSS 5.5
CVE-2020-27673 [MEDIUM] CVE-2020-27673: An issue was discovered in the Linux kernel through 5
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.
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-02-25·CVSS 4.1
CVE-2020-25704 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the console keyboard driver in the Linux kernel
contained a race condition. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2020-25656)
Minh Yuan discovered that the tty driver in the Linux kernel contained race
conditions when handling fonts. A local attacker could possibly use this to
expose sensitive information (kernel memory). (CVE-2020-25668)
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
Kiyin (尹亮) discovered that the perf subsystem in the Linux kernel
Red Hat
kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
vendor_redhat·2020-10-20·CVSS 5.5
CVE-2020-27673 [MEDIUM] CWE-400 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
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.
Package: kernel (Red Hat Enterprise Linux 5) - Out of support scope
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-alt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise MRG 2) - Not affe
Debian
CVE-2020-27673: linux - An issue was discovered in the Linux kernel through 5.9.1, as used with Xen thro...
vendor_debian·2020·CVSS 5.5
CVE-2020-27673 [MEDIUM] CVE-2020-27673: linux - An issue was discovered in the Linux kernel through 5.9.1, as used with Xen thro...
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.
Scope: local
bookworm: resolved (fixed in 5.9.6-1)
bullseye: resolved (fixed in 5.9.6-1)
forky: resolved (fixed in 5.9.6-1)
sid: resolved (fixed in 5.9.6-1)
trixie: resolved (fixed in 5.9.6-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
bugzilla·2020-10-23·CVSS 5.5
CVE-2020-27673 [MEDIUM] CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
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.
Reference:
https://xenbits.xen.org/xsa/advisory-332.html
Upstream patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1891112]
---
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):
https://access.redhat.com/security/cve/cve-2020-27673
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]
bugzilla·2020-10-23·CVSS 5.5
CVE-2020-27673 [MEDIUM] CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332) [fedora-all]
CVE-2020-27673 kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332) [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this iss
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.htmlhttp://www.openwall.com/lists/oss-security/2021/01/19/6https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlhttps://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlhttps://security.gentoo.org/glsa/202011-06https://xenbits.xen.org/xsa/advisory-332.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.htmlhttp://www.openwall.com/lists/oss-security/2021/01/19/6https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlhttps://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlhttps://security.gentoo.org/glsa/202011-06https://xenbits.xen.org/xsa/advisory-332.html
2020-10-22
Published