Description
Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service (write denial or NMI watchdog timeout and host crash) via a large number of read requests, a different vulnerability than CVE-2014-9065.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xen | No fix yet | — |
| Debian 13 | xen | No fix yet | — |
| Debian 12 | xen | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | xen | 4.4.1-0ubuntu0.14.04.4 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | xen | 4.4.1_10-9.1 | SUSE-SU-2015:0613-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | xen | 4.4.1_10-9.1 | SUSE-SU-2015:0613-1 |
Advisories 1
- SUSE-SU-2015:0613-1 Security update for Xen SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://xenbits.xen.org/xsa/advisory-114.html
- GLSA-201504-04 vendor-advisory
- openSUSE-SU-2015:0226 vendor-advisory
- 71546 vdb-entry
- openSUSE-SU-2015:0256 vendor-advisory
- [oss-security] 20141208 Xen Security Advisory 114 (CVE-2014-9065,CVE-2014-9066) - p2m lock starvation mailing-list