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suseSuseOPENSUSE-SU-2018:1628-1
HistoryJun 09, 2018 - 3:11 p.m.

Security update for qemu (important)

2018-06-0915:11:25
lists.opensuse.org
21

0.003 Low

EPSS

Percentile

65.2%

This update for qemu fixes the following issues:

This security issue was fixed:

  • CVE-2018-3639: Spectre v4 vulnerability mitigation support for KVM
    guests (bsc#1092885).

    Systems with microprocessors utilizing speculative execution and
    speculative execution of memory reads before the addresses of all prior
    memory writes are known may allow unauthorized disclosure of information
    to an attacker with local user access via a side-channel analysis.

    This patch permits the new x86 cpu feature flag named "ssbd" to be
    presented to the guest, given that the host has this feature, and KVM
    exposes it to the guest as well.

    For this feature to be enabled please use the qemu commandline
    -cpu $MODEL,+spec-ctrl,+ssbd so the guest OS can take advantage of the
    feature.

    spec-ctrl and ssbd support is also required in the host.

This non-security issue was fixed:

  • Fix qemu-guest-agent uninstall (boo#1093169)