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HistoryMay 23, 2018 - 3:07 p.m.

Security update for qemu (important)


0.003 Low




This update for qemu fixes several 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

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

This non-security issue was fixed:

  • bsc#1070615: Add new look up path "sys/class/tpm" for tpm cancel path

This update was imported from the SUSE:SLE-12-SP3:Update update project.