Security update for xen
Announcement ID: | SUSE-SU-2017:0571-1 |
Rating: | important |
References: | #1000195 #1002496 #1005028 #1012651 #1014298 #1014300 #1015169 #1016340 #1022871 #1023004 #1024834 |
Affected Products: |
An update that solves four vulnerabilities and has 7 fixes is now available.
Description:
This update for xen fixes several issues.
These security issues were fixed:
- CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine
cirrus_bitblt_cputovideo failed to check the memory region, allowing for
an out-of-bounds write that allows for privilege escalation
(bsc#1024834).
- CVE-2017-2615: An error in the bitblt copy operation could have allowed
a malicious guest administrator to cause an out of bounds memory access,
possibly leading to information disclosure or privilege escalation
(bsc#1023004).
- A malicious guest could have, by frequently rebooting over extended
periods of time, run the host system out of memory, resulting in a
Denial of Service (DoS) (bsc#1022871)
- CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support was vulnerable
to a divide by zero issue while copying VGA data. A privileged user
inside guest could have used this flaw to crash the process instance on
the host, resulting in DoS (bsc#1015169
These non-security issues were fixed:
- bsc#1000195: Prevent panic on CPU0 while booting on SLES 11 SP3
- bsc#1002496: Added support for reloading clvm in block-dmmd block-dmmd
- bsc#1005028: Fixed building Xen RPMs from Sources
Patch Instructions:
To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:
- SUSE Linux Enterprise Software Development Kit 12-SP2:
zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-296=1
- SUSE Linux Enterprise Server 12-SP2:
zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-296=1
- SUSE Linux Enterprise Desktop 12-SP2:
zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-296=1
To bring your system up-to-date, use "zypper patch".
Package List:
- SUSE Linux Enterprise Software Development Kit 12-SP2 (aarch64 x86_64):
- xen-debugsource-4.7.1_06-31.1
- xen-devel-4.7.1_06-31.1
- SUSE Linux Enterprise Server 12-SP2 (x86_64):
- xen-4.7.1_06-31.1
- xen-debugsource-4.7.1_06-31.1
- xen-doc-html-4.7.1_06-31.1
- xen-libs-32bit-4.7.1_06-31.1
- xen-libs-4.7.1_06-31.1
- xen-libs-debuginfo-32bit-4.7.1_06-31.1
- xen-libs-debuginfo-4.7.1_06-31.1
- xen-tools-4.7.1_06-31.1
- xen-tools-debuginfo-4.7.1_06-31.1
- xen-tools-domU-4.7.1_06-31.1
- xen-tools-domU-debuginfo-4.7.1_06-31.1
- SUSE Linux Enterprise Desktop 12-SP2 (x86_64):
- xen-4.7.1_06-31.1
- xen-debugsource-4.7.1_06-31.1
- xen-libs-32bit-4.7.1_06-31.1
- xen-libs-4.7.1_06-31.1
- xen-libs-debuginfo-32bit-4.7.1_06-31.1
- xen-libs-debuginfo-4.7.1_06-31.1
References:
- https://www.suse.com/security/cve/CVE-2016-9921.html
- https://www.suse.com/security/cve/CVE-2016-9922.html
- https://www.suse.com/security/cve/CVE-2017-2615.html
- https://www.suse.com/security/cve/CVE-2017-2620.html
- https://bugzilla.suse.com/1000195
- https://bugzilla.suse.com/1002496
- https://bugzilla.suse.com/1005028
- https://bugzilla.suse.com/1012651
- https://bugzilla.suse.com/1014298
- https://bugzilla.suse.com/1014300
- https://bugzilla.suse.com/1015169
- https://bugzilla.suse.com/1016340
- https://bugzilla.suse.com/1022871
- https://bugzilla.suse.com/1023004
- https://bugzilla.suse.com/1024834