Vulnerability Monitor

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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 (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.

Published

2020-10-22T21:15:14.013

Last Modified

2024-11-21T05:21:38.377

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

6.9

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 4.4.244	Yes
Operating System	linux	linux_kernel	< 4.9.244	Yes
Operating System	linux	linux_kernel	< 4.14.207	Yes
Operating System	linux	linux_kernel	< 4.19.155	Yes
Operating System	linux	linux_kernel	< 5.4.75	Yes
Operating System	linux	linux_kernel	< 5.9.5	Yes
Operating System	linux	linux_kernel	5.10	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	opensuse	leap	15.1	Yes
Operating System	opensuse	leap	15.2	Yes
Operating System	xen	xen	≤ 4.14.0	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/01/19/6 Mailing List, Third Party Advisory ([email protected])
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070 Patch, Vendor Advisory ([email protected])
https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070 Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202011-06 Third Party Advisory ([email protected])
https://xenbits.xen.org/xsa/advisory-332.html Patch, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/01/19/6 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202011-06 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://xenbits.xen.org/xsa/advisory-332.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)