CVE-2018-3639

libnss-libvirt: Systems with microprocessors utilizing speculative execution andspeculative execution of memory reads before the addr...

CVE-2018-3639 is fixed in 49 products on 1 platform, first by libnss-libvirt 4.0.0-1ubuntu8.2, released May 21, 2018. 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
0.6042
99th percentile

Systems with microprocessors utilizing speculative execution andspeculative execution of memory reads before the addresses of all priormemory writes are known may allow unauthorized disclosure of information toan attacker with local user access via a side-channel analysis, akaSpeculative Store Bypass (SSB), Variant 4.

Where it's fixed

ProductFixed inFixReleased
Linux
intel-microcode · Ubuntu 18.04.6 LTS (bionic) 3.20180807a.0ubuntu0.18.04.1 intel-microcode 3.20180807a.0ubuntu0.18.04.1 Aug 14, 2018
libnss-libvirt · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libnss-libvirt 4.0.0-1ubuntu8.2 May 21, 2018
libnss-libvirt · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libnss-libvirt 4.0.0-1ubuntu11 Jan 16, 2026
libnss-libvirt · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libnss-libvirt 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-bin · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-bin 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-clients · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-clients 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-clients · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-clients 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-clients · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-clients 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-clients-qemu · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-clients-qemu 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-clients-qemu · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-clients-qemu 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-daemon 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-daemon · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-config-network · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-config-network 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-config-network · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-config-network 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-config-nwfilter · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-config-nwfilter 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-config-nwfilter · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-config-nwfilter 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-lxc · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-lxc 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-lxc · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-lxc 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-qemu · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-qemu 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-qemu · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-qemu 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-gluster · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-daemon-driver-storage-gluster 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-daemon-driver-storage-gluster · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-gluster 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-gluster · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-gluster 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-iscsi-direct · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-iscsi-direct 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-iscsi-direct · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-iscsi-direct 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-rbd · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-daemon-driver-storage-rbd 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-daemon-driver-storage-rbd · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-rbd 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-rbd · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-rbd 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-sheepdog · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-daemon-driver-storage-sheepdog 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-daemon-driver-storage-zfs · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-daemon-driver-storage-zfs 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-daemon-driver-storage-zfs · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-zfs 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-storage-zfs · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-storage-zfs 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-vbox · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-vbox 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-vbox · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-vbox 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-xen · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-driver-xen 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-driver-xen · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-driver-xen 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-system · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-daemon-system 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-daemon-system · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-system 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-system · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-system 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-system-systemd · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-system-systemd 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-system-systemd · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-system-systemd 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-system-sysv · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-daemon-system-sysv 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-daemon-system-sysv · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-daemon-system-sysv 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-l10n · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-l10n 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-l10n · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-l10n 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-login-shell · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-login-shell 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-login-shell · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-login-shell 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-sanlock · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-sanlock 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-sanlock · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-sanlock 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-sanlock · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-sanlock 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-wireshark · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt-wireshark 4.0.0-1ubuntu8.2 May 21, 2018
libvirt-wireshark · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt-wireshark 4.0.0-1ubuntu11 Jan 16, 2026
libvirt-wireshark · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt-wireshark 4.0.0-1ubuntu11 Jan 16, 2026
libvirt0 · Ubuntu 18.04.6 LTS (bionic) 4.0.0-1ubuntu8.2 libvirt0 4.0.0-1ubuntu8.2 May 21, 2018
libvirt0 · Ubuntu 24.10 (oracular) 4.0.0-1ubuntu11 libvirt0 4.0.0-1ubuntu11 Jan 16, 2026
libvirt0 · Ubuntu 25.04 (plucky) 4.0.0-1ubuntu11 libvirt0 4.0.0-1ubuntu11 Jan 16, 2026
qemu · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-block-extra · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-block-extra 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-block-extra · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-block-extra 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-block-extra · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-block-extra 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-block-supplemental · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-block-supplemental 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-block-supplemental · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-block-supplemental 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-guest-agent · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-guest-agent 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-guest-agent · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-guest-agent 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-guest-agent · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-guest-agent 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-kvm · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-kvm 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-arm · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-arm 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-arm · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-arm 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-arm · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-arm 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-common · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-common 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-common · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-common 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-common · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-common 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-data · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-data 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-data · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-data 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-gui · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-gui 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-gui · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-gui 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-mips · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-mips 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-mips · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-mips 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-mips · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-mips 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-misc · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-misc 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-misc · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-misc 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-misc · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-misc 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-modules-opengl · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-modules-opengl 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-modules-opengl · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-modules-opengl 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-modules-spice · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-modules-spice 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-modules-spice · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-modules-spice 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-ppc · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-ppc 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-ppc · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-ppc 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-ppc · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-ppc 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-s390x · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-s390x 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-s390x · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-s390x 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-s390x · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-s390x 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-sparc · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-sparc 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-sparc · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-sparc 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-sparc · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-sparc 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-x86 · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-system-x86 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-system-x86 · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-x86 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-x86 · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-x86 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-x86-xen · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-x86-xen 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-x86-xen · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-x86-xen 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-xen · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-system-xen 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-system-xen · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-system-xen 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-user · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-user 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-user · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-user 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-user · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-user 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-user-binfmt · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-user-binfmt 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-user-binfmt · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-user-binfmt 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-user-binfmt · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-user-binfmt 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-user-static · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-user-static 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-user-static · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-user-static 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-user-static · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-user-static 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-utils · Ubuntu 18.04.6 LTS (bionic) 1:2.11+dfsg-1ubuntu7.2 qemu-utils 1:2.11+dfsg-1ubuntu7.2 May 21, 2018
qemu-utils · Ubuntu 24.10 (oracular) 1:2.11+dfsg-1ubuntu10 qemu-utils 1:2.11+dfsg-1ubuntu10 Jan 16, 2026
qemu-utils · Ubuntu 25.04 (plucky) 1:2.11+dfsg-1ubuntu10 qemu-utils 1:2.11+dfsg-1ubuntu10 Jan 16, 2026