RHBA-2015:0297 - Bug Fix Advisory

Topic

Updated spice-gtk packages that fix several bugs and add various enhancements are now available for Red Hat Enterprise Linux 7.

Description

The spice-gtk packages provide a GIMP Toolkit (GTK+) widget for SPICE (Simple Protocol for Independent Computing Environments) clients. Both Virtual Machine Manager and Virtual Machine Viewer can make use of this widget to access virtual machines using the SPICE protocol.

The spice-gtk packages have been upgraded to upstream version 0.22, which
provides a number of bug fixes and enhancements over the previous version. (BZ#1109397)

This update also fixes the following bugs:

• Previously, miscellaneous coverity defects were identified in the spice-gtk packages. With this update, a number of upstream and downstream patches have been applied to fix these defects. (BZ#885719)
• The "ucontext" coroutine implementation mapped 16 MB of memory for the coroutine stack, but failed to ever unmap it. As a consequence, the stack leaked memory for each coroutine started. This bug has been fixed, and the stack no longer leaks memory. (BZ#1007837)
• Previously, the protocol version fallback was broken. As a consequence, trying to connect to SPICE guests on Red Hat Enterprise Linux 5 servers failed. This update fixes the old protocol fallback, and connecting to spice guests works again. (BZ#1017862)
• When taking a screenshot of a secondary screen, the resulting image was corrupted. This bug in virt-viewer has been fixed, and taking screenshots on non-primary displays now works as expected. (BZ#1029761)
• Previously, when restarting the spice-vdagentd daemon in a guest, an additional display popped up. This bug has been fixed, and no additional displays pop up when restarting spice-vdagentd. (BZ#1043782)
• "Resizing" and "scaling" a display are rather similar terms. When virt-viewer and remote-viewer scale displays, it means they zoom the display on the client to fit the local window size. However, virt-viewer and remote-viewer allowed the user to disable display resizing, meaning changing the resolution on the guest to match the display window size, which confused the users who expected different behavior. This update removes the ability to disable resizing, and virt-viewer and remote-viewer now always automatically change the resolution on the guest to match the window size if possible. (BZ#1067346)
• Previously, various clipboard managers operating on the client or on the guest could occasionally lose synchronization, which resulted in clipboard data loss and the SPICE console becoming unresponsive. A patch has been applied to fix this bug, and clipboard synchronization no longer hangs the SPICE console. (BZ#1073364)
• Previously, in log, there was no difference in the error message returned after connection to destination server failure and the HTTP proxy server failure. This update fixes the messages which are now sufficiently different, so that the user learns whether the connection to the proxy or to the server has failed. (BZ#1116048)
• The spice-gtk client did not send a data message for 0-size files. However, both Linux and Windows agents were expecting to receive the messages. As consequence, Linux and Windows agents kept a file open, thus leaking it, and the number of open file descriptors kept growing. This bug has been fixed, and the number of file descriptors no longer grows in this scenario. (BZ#1135104)

Users of spice-gtk are advised to upgrade to these updated packages, which fix these bugs and add these enhancements.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.3 x86_64
• Red Hat Enterprise Linux Server from RHUI 7 x86_64
• Red Hat Enterprise Linux Server - AUS 7.7 x86_64
• Red Hat Enterprise Linux Server - AUS 7.6 x86_64
• Red Hat Enterprise Linux Server - AUS 7.4 x86_64
• Red Hat Enterprise Linux Server - AUS 7.3 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux Server - TUS 7.7 x86_64
• Red Hat Enterprise Linux Server - TUS 7.6 x86_64
• Red Hat Enterprise Linux Server - TUS 7.3 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.3 x86_64

Fixes

• BZ - 1007841 - Leak 16 MB of memory per connection opened
• BZ - 1017862 - Cannot connect to VMs on RHEL5 host
• BZ - 1029761 - virt-viewer can not get the perfect screenshot of the secondary displays
• BZ - 1043782 - Additional display pop out when restarting service spice-vdagentd in guest
• BZ - 1067346 - SPICE console is always scaled in fullscreen mode even if "Automatically resize" is disabled.
• BZ - 1109397 - Rebase spice-gtk to 0.22
• BZ - 1116048 - if connection to spice proxy fails, mention in log message that the failed connection was to the proxy
• BZ - 1135104 - Should send data message for file copy of 0 size

CVEs

(none)

References

• http://www.redhat.com/security/updates/classification/#normal