CVE-2015-8550
libxencall1t64: Xen, when used on a system providing PV backends, allows local guest OSadministrators to cause a denial of service (h...
CVE-2015-8550 is fixed in 42 products on 1 platform, first by libxencall1t64 4.6.0-1ubuntu2, released December 17, 2015. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0108
65th percentile
Xen, when used on a system providing PV backends, allows local guest OSadministrators to cause a denial of service (host OS crash) or gainprivileges by writing to memory shared between the frontend and backend,aka a double fetch vulnerability.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libxencall1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxencall1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxendevicemodel1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxendevicemodel1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxenevtchn1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxenevtchn1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxenforeignmemory1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxenforeignmemory1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxengnttab1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxengnttab1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxenhypfs1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxenhypfs1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxenmisc4.17t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxenmisc4.17t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxenstore4t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxenstore4t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxentoolcore1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxentoolcore1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| libxentoollog1t64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | libxentoollog1t64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| qemu-block-extra · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-block-extra 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-block-supplemental · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-block-supplemental 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-guest-agent · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-guest-agent 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-arm · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-arm 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-common · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-common 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-data · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-data 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-gui · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-gui 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-mips · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-mips 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-misc · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-misc 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-modules-opengl · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-modules-opengl 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-modules-spice · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-modules-spice 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-ppc · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-ppc 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-s390x · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-s390x 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-sparc · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-sparc 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-x86 · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-x86 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-x86-xen · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-x86-xen 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-system-xen · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-system-xen 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-user · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-user 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-user-binfmt · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-user-binfmt 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-user-static · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-user-static 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| qemu-utils · Ubuntu 25.04 (plucky) | 1:2.5+dfsg-1ubuntu5 | qemu-utils 1:2.5+dfsg-1ubuntu5 | Dec 17, 2015 |
| xen-hypervisor-4.17-amd64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-hypervisor-4.17-amd64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-hypervisor-4.17-arm64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-hypervisor-4.17-arm64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-hypervisor-4.17-armhf · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-hypervisor-4.17-armhf 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-hypervisor-common · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-hypervisor-common 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-system-amd64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-system-amd64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-system-arm64 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-system-arm64 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-system-armhf · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-system-armhf 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-utils-4.17 · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-utils-4.17 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xen-utils-common · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xen-utils-common 4.6.0-1ubuntu2 | Dec 17, 2015 |
| xenstore-utils · Ubuntu 25.04 (plucky) | 4.6.0-1ubuntu2 | xenstore-utils 4.6.0-1ubuntu2 | Dec 17, 2015 |