Bug 1285350 (xsa163)
Summary: | xen: Virtual Performance Measurement Unit feature is unsupported | ||
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Product: | [Other] Security Response | Reporter: | Adam Mariš <amaris> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED NOTABUG | QA Contact: | |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | unspecified | CC: | agordeev, ailan, aquini, bhu, blc, dhoward, drjones, esammons, fhrbata, hkrzesin, hwkernel-mgr, iboverma, imammedo, jforbes, jkacur, jross, kernel-mgr, knoel, lgoncalv, lwang, matt, m.a.young, mcressma, mguzik, mlangsdo, mrezanin, nmurray, osoukup, pbonzini, plougher, rkrcmar, rt-maint, rvrbovsk, virt-maint, vkuznets, williams, wmealing, xen-maint |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: |
The Virtual Performance Measurement Unit feature has been documented as unsupported on Intel CPUs. Further issues have been found or are suspected which would also (or exclusively) affect AMD CPUs. Use of the feature may have unknown effects, ranging from information leaks through Denial of Service to privilege escalation.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2017-10-19 12:42:02 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 1285351 | ||
Bug Blocks: | 1284949 |
Description
Adam Mariš
2015-11-25 12:45:53 UTC
Created xen tracking bugs for this issue: Affects: fedora-all [bug 1285351] External References: http://xenbits.xen.org/xsa/advisory-163.html xen-4.5.2-5.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. xen-4.5.2-5.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report. Statement: This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5,6,7, MRG-2 and realtime. The code that enables VPMU as a valid instructions are not included in the initial version of xen that ships with Red Hat Enterprise Linux 5. Mitigation: At this time this flaw only affects systems with the hypervisor booted with the vpmu parameter, which is not supported by the version shipping with Red Hat Enterprise Linux 5. |