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CVE-2014-5146

Published: 22 August 2014

Certain MMU virtualization operations in Xen 4.2.x through 4.4.x before the xsa97-hap patch, when using Hardware Assisted Paging (HAP), are not preemptible, which allows local HVM guest to cause a denial of service (vcpu consumption) by invoking these operations, which process every page assigned to a guest, a different vulnerability than CVE-2014-5149.

Notes

AuthorNote
mdeslaur
Original patch got reverted in git because of regressions. Be
careful when fixing.

Priority

Medium

Status

Package Release Status
xen
Launchpad, Ubuntu, Debian
lucid Does not exist

precise
Released (4.1.6.1-0ubuntu0.12.04.6)
trusty Does not exist
(trusty was not-affected)
upstream Needed

utopic Ignored
(end of life)
vivid Not vulnerable

Patches:
upstream: http://lists.xen.org/archives/html/xen-announce/2014-08/binBl1EttLmuf.bin (4.2 p1)
upstream: http://lists.xen.org/archives/html/xen-announce/2014-08/binf523qdXfzv.bin (4.2 p2)
upstream: http://lists.xen.org/archives/html/xen-announce/2014-08/binsyOajrhEHl.bin (4.3)
upstream: http://lists.xen.org/archives/html/xen-announce/2014-08/binLdj60kEVFy.bin (4.4)
upstream: http://lists.xen.org/archives/html/xen-announce/2014-08/binKv_7vEST9M.bin (unstable)
Binaries built from this source package are in Universe and so are supported by the community.
xen-3.3
Launchpad, Ubuntu, Debian
lucid Ignored
(end of life)
precise Does not exist

trusty Does not exist

upstream Ignored
(end of life)
utopic Does not exist

vivid Does not exist

Binaries built from this source package are in Universe and so are supported by the community.