Bug 828012 (CVE-2013-1943) - VUL-0: CVE-2013-1943: kernel: kvm: missing check in kvm_set_memory_region()
Summary: VUL-0: CVE-2013-1943: kernel: kvm: missing check in kvm_set_memory_region()
Status: RESOLVED INVALID
Alias: CVE-2013-1943
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Major
Target Milestone: ---
Deadline: 2013-09-27
Assignee: Bruce Rogers
QA Contact: Security Team bot
URL:
Whiteboard: maint:released:sle11-sp1:54470 maint:...
Keywords:
Depends on:
Blocks:
 
Reported: 2013-07-03 15:45 UTC by Marcus Meissner
Modified: 2014-02-24 16:15 UTC (History)
3 users (show)

See Also:
Found By: ---
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Marcus Meissner 2013-07-03 15:45:58 UTC 
is public, via Redhat

https://bugzilla.redhat.com/show_bug.cgi?id=950490 CVE-2013-1943

A check for valid userspace memory was found missing in kvm_set_memory_region() function. Because of that, memory regions pointing to kernel memory could be registered with KVM and later used when converting guest physical addresses to host virtual ones. Several call sites relied on the validation and were using read/write functions that were missing the access_ok() check when accessing userspace memory.

A local unprivileged user on Red Hat Enterprise Linux 6 system could use this flaw to escalate their privileges on the system.

On Red Hat Enterprise Linux 6.2 EUS and Red Hat Enterprise Linux 6.3 EUS the impact is limited to potential information leak only.

A local user on Red Hat Enterprise Linux 5 system able to write to /dev/kvm could possibly use this flaw to leak kernel memory.

Upstream fixes:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fa3d315a4ce2c0891cdde262562e710d95fba19e
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3bb6b6f6a0c535eb053fbf0005a8e79e053374

Acknowledgements:

This issue was discovered by Michael S. Tsirkin of Red Hat.
Comment 1 Swamp Workflow Management 2013-07-03 22:00:43 UTC 
bugbot adjusting priority
Comment 2 Bruce Rogers 2013-07-08 17:50:34 UTC 
We have these fixes already for SLE11 SP2 and SP3, as both are in the 3.0 kernel. Also, all currently active openSUSE releases are use post v3.0 kernels.

So from my perspective, this security issue is already addressed.
Comment 3 Marcus Meissner 2013-07-09 08:15:52 UTC 
Confirmed it be in 3.0 already, so we are good for that.
Comment 5 Michal Hocko 2013-07-09 11:52:16 UTC 
pushed to SLE11-SP1-TD, other TD branches are not affected AFAICS.
Comment 6 Swamp Workflow Management 2013-09-20 11:54:35 UTC 
The SWAMPID for this issue is 54469.
This issue was rated as important.
Please submit fixed packages until 2013-09-27.
When done, please reassign the bug to security-team@suse.de.
Patchinfo will be handled by security team.
Comment 7 Swamp Workflow Management 2013-10-01 12:04:42 UTC 
Update released for: kernel-debug, kernel-debug-base, kernel-debug-debuginfo, kernel-debug-debugsource, kernel-debug-devel, kernel-debug-devel-debuginfo, kernel-debug-extra, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-docs, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra
Products:
SLE-SERVER 11-SP1-TERADATA (x86_64)
Comment 8 Swamp Workflow Management 2014-02-24 08:57:47 UTC 
Update released for: btrfs-kmp-default, btrfs-kmp-pae, btrfs-kmp-trace, btrfs-kmp-xen, cluster-network-kmp-default, cluster-network-kmp-pae, cluster-network-kmp-trace, cluster-network-kmp-xen, ext4dev-kmp-default, ext4dev-kmp-pae, ext4dev-kmp-trace, ext4dev-kmp-xen, gfs2-kmp-default, gfs2-kmp-pae, gfs2-kmp-trace, gfs2-kmp-xen, hyper-v-kmp-default, hyper-v-kmp-pae, hyper-v-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-debuginfo, kernel-ec2-debugsource, kernel-ec2-devel, kernel-ec2-devel-debuginfo, kernel-ec2-extra, kernel-pae, kernel-pae-base, kernel-pae-debuginfo, kernel-pae-debugsource, kernel-pae-devel, kernel-pae-devel-debuginfo, kernel-pae-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, ocfs2-kmp-default, ocfs2-kmp-pae, ocfs2-kmp-trace, ocfs2-kmp-xen
Products:
SLE-DEBUGINFO 11-SP1 (i386)
SLE-SERVER 11-SP1-LTSS (i386)
Comment 9 Swamp Workflow Management 2014-02-24 08:58:27 UTC 
Update released for: btrfs-kmp-default, btrfs-kmp-trace, cluster-network-kmp-default, cluster-network-kmp-trace, ext4dev-kmp-default, ext4dev-kmp-trace, gfs2-kmp-default, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-default-man, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-trace-man, ocfs2-kmp-default, ocfs2-kmp-trace
Products:
SLE-DEBUGINFO 11-SP1 (s390x)
SLE-SERVER 11-SP1-LTSS (s390x)
Comment 10 Swamp Workflow Management 2014-02-24 09:57:45 UTC 
Update released for: btrfs-kmp-default, btrfs-kmp-trace, btrfs-kmp-xen, cluster-network-kmp-default, cluster-network-kmp-trace, cluster-network-kmp-xen, ext4dev-kmp-default, ext4dev-kmp-trace, ext4dev-kmp-xen, gfs2-kmp-default, gfs2-kmp-trace, gfs2-kmp-xen, hyper-v-kmp-default, hyper-v-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-debuginfo, kernel-ec2-debugsource, kernel-ec2-devel, kernel-ec2-devel-debuginfo, kernel-ec2-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, ocfs2-kmp-default, ocfs2-kmp-trace, ocfs2-kmp-xen
Products:
SLE-DEBUGINFO 11-SP1 (x86_64)
SLE-SERVER 11-SP1-LTSS (x86_64)
Comment 11 Swamp Workflow Management 2014-02-24 14:28:52 UTC 
SUSE-SU-2014:0287-1: An update that solves 84 vulnerabilities and has 41 fixes is now available.

Category: security (moderate)
Bug References: 714906,715250,735347,744955,745640,748896,752544,754898,760596,761774,762099,762366,763463,763654,767610,767612,768668,769644,769896,770695,771706,771992,772849,773320,773383,773577,773640,773831,774523,775182,776024,776144,776885,777473,780004,780008,780572,782178,785016,786013,787573,787576,789648,789831,795354,797175,798050,800280,801178,802642,803320,804154,804653,805226,805227,805945,806138,806976,806977,806980,807320,808358,808827,809889,809891,809892,809893,809894,809898,809899,809900,809901,809902,809903,810045,810473,811354,812364,813276,813735,814363,814716,815352,815745,816668,817377,818337,818371,820338,822575,822579,823260,823267,823618,824159,824295,825227,826707,827416,827749,827750,828012,828119,833820,835094,835481,835839,840226,840858,845028,847652,847672,848321,849021,851095,851103,852558,852559,853050,853051,853052,856917,858869,858870,858872
CVE References: CVE-2011-1083,CVE-2011-3593,CVE-2012-1601,CVE-2012-2137,CVE-2012-2372,CVE-2012-2745,CVE-2012-3375,CVE-2012-3412,CVE-2012-3430,CVE-2012-3511,CVE-2012-4444,CVE-2012-4530,CVE-2012-4565,CVE-2012-6537,CVE-2012-6538,CVE-2012-6539,CVE-2012-6540,CVE-2012-6541,CVE-2012-6542,CVE-2012-6544,CVE-2012-6545,CVE-2012-6546,CVE-2012-6547,CVE-2012-6548,CVE-2012-6549,CVE-2013-0160,CVE-2013-0216,CVE-2013-0231,CVE-2013-0268,CVE-2013-0310,CVE-2013-0343,CVE-2013-0349,CVE-2013-0871,CVE-2013-0914,CVE-2013-1767,CVE-2013-1773,CVE-2013-1774,CVE-2013-1792,CVE-2013-1796,CVE-2013-1797,CVE-2013-1798,CVE-2013-1827,CVE-2013-1928,CVE-2013-1943,CVE-2013-2015,CVE-2013-2141,CVE-2013-2147,CVE-2013-2164,CVE-2013-2232,CVE-2013-2234,CVE-2013-2237,CVE-2013-2634,CVE-2013-2851,CVE-2013-2852,CVE-2013-2888,CVE-2013-2889,CVE-2013-2892,CVE-2013-2893,CVE-2013-2897,CVE-2013-2929,CVE-2013-3222,CVE-2013-3223,CVE-2013-3224,CVE-2013-3225,CVE-2013-3228,CVE-2013-3229,CVE-2013-3231,CVE-2013-3232,CVE-2013-3234,CVE-2013-3235,CVE-2013-4345,CVE-2013-4470,CVE-2013-4483,CVE-2013-4511,CVE-2013-4587,CVE-2013-4588,CVE-2013-4591,CVE-2013-6367,CVE-2013-6368,CVE-2013-6378,CVE-2013-6383,CVE-2014-1444,CVE-2014-1445,CVE-2014-1446
Sources used:
SUSE Linux Enterprise Server 11 SP1 LTSS (src):    btrfs-0-0.3.151, ext4dev-0-7.9.118, hyper-v-0-0.18.37, kernel-default-2.6.32.59-0.9.1, kernel-ec2-2.6.32.59-0.9.1, kernel-pae-2.6.32.59-0.9.1, kernel-source-2.6.32.59-0.9.1, kernel-syms-2.6.32.59-0.9.1, kernel-trace-2.6.32.59-0.9.1, kernel-xen-2.6.32.59-0.9.1
SLE 11 SERVER Unsupported Extras (src):    kernel-default-2.6.32.59-0.9.1, kernel-pae-2.6.32.59-0.9.1, kernel-xen-2.6.32.59-0.9.1
Comment 12 Swamp Workflow Management 2014-02-24 14:43:38 UTC 
Update released for: kernel-default-extra, kernel-xen-extra
Products:
SLE-SERVER 11-EXTRA (x86_64)
Comment 13 Swamp Workflow Management 2014-02-24 15:15:20 UTC 
Update released for: kernel-default-extra, kernel-pae-extra, kernel-xen-extra
Products:
SLE-SERVER 11-EXTRA (i386)
Comment 14 Swamp Workflow Management 2014-02-24 16:15:31 UTC 
Update released for: kernel-default-extra
Products:
SLE-SERVER 11-EXTRA (s390x)