High severity8.6NVD Advisory· Published Apr 13, 2016· Updated Jun 17, 2026
CVE-2015-8555
CVE-2015-8555
Description
Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
33- cpe:2.3:a:citrix:xenserver:6.0:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*+ 16 more
- cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.3.4:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.4.4:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*
- (no CPE)range: <= 4.6.x
- osv-coords15 versionspkg:rpm/opensuse/xen&distro=openSUSE%20Tumbleweedpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1
< 4.7.0_12-1.3+ 14 more
- (no CPE)range: < 4.7.0_12-1.3
- (no CPE)range: < 4.4.4_02-32.1
- (no CPE)range: < 4.4.4_02-22.19.1
- (no CPE)range: < 4.5.2_06-7.1
- (no CPE)range: < 4.1.6_08-26.1
- (no CPE)range: < 4.2.5_20-24.9
- (no CPE)range: < 4.4.4_02-32.1
- (no CPE)range: < 4.4.4_02-22.19.1
- (no CPE)range: < 4.5.2_06-7.1
- (no CPE)range: < 4.4.4_02-32.1
- (no CPE)range: < 4.4.4_02-22.19.1
- (no CPE)range: < 4.5.2_06-7.1
- (no CPE)range: < 4.4.4_02-32.1
- (no CPE)range: < 4.4.4_02-22.19.1
- (no CPE)range: < 4.5.2_06-7.1
Patches
Vulnerability mechanics
References
7- xenbits.xen.org/xsa/advisory-165.htmlnvdPatchVendor Advisory
- support.citrix.com/article/CTX203879nvd
- www.debian.org/security/2016/dsa-3519nvd
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlnvd
- www.securityfocus.com/bid/79543nvd
- www.securitytracker.com/id/1034477nvd
- security.gentoo.org/glsa/201604-03nvd
News mentions
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