kernel: xen: guest OS users can cause a DoS via a high rate of events to dom0 (XSA-332)
Published Oct 22, 2020
5.5
MEDIUMCVSS 3.1
EPSS 0.41%
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.
Affected products
No data.
Configuration 1
- ≥ 2.6.12 · < 4.4.244
- ≥ 4.5.0 · < 4.9.244
- ≥ 4.10.0 · < 4.14.207
- ≥ 4.15.0 · < 4.19.155
- ≥ 4.20.0 · < 5.4.75
- ≥ 5.5.0 · < 5.9.5
- 5.10
Configuration 2
- 9.0
No data.
Red Hat Enterprise Linux 5
kernel
Out of support scope
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (14)
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/6 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2020-27673 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1891110 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-20177 Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070 x_refsource_MISCPatchVendor Advisory
- https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070 x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-27673
- https://security.gentoo.org/glsa/202011-06 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2020-27673
- https://xenbits.xen.org/xsa/advisory-332.html x_refsource_MISCPatchThird Party Advisory
Change history (0)
No recorded changes yet.