Bugzilla – Bug 676204
VUL-1: kernel: epoll DoS via large nested struct
Last modified: 2015-02-19 00:19:35 UTC
Your friendly security team received the following report via oss-security. Please respond ASAP. The issue is public. ------------------------------------------------------------------------------ Date: Tue, 1 Mar 2011 20:56:46 -0500 From: Nelson Elhage <nelhage@ksplice.com> Subject: [oss-security] CVE request: kernel: Multiple DoS issues in epoll [...] (2) The epoll subsystem allows users to create large nested epoll structures, which the kernel will then to walk with preemption disabled, causing a denial of service via excessive CPU consumption in the kernel. References: http://thread.gmane.org/gmane.linux.kernel/1105744 http://thread.gmane.org/gmane.linux.kernel/1105744/focus=1105888 No upstream fix yet for this one. - Nelson
CVE-2011-1083
Miklos, what is the status here please?
There's no upstream fix yet. Apparently RedHat hasn't yet fixed this yet either. If this is important and we should put more time into finding a solution then please raise priority.
not terribly urgent.
Hi Miklos, there seems to be a fix now in mainline. commit 28d82dc1c4edbc352129f97f4ca22624d1fe61de Author: Jason Baron <jbaron@redhat.com> Date: Thu Jan 12 17:17:43 2012 -0800 epoll: limit paths it changes struct file in include/linux/fs.h which might not be kABI transparent, so this needs to be adjusted during backporting. Can you check if we can backport this?
(In reply to comment #5) > Can you check if we can backport this? SLE11-SP2 and SP1 look easy enough. SLE10 is hopeless. Putting the new field at the end of the structure should solve the kABI issues, right?
end of the struct only works well, if the struct is not embedded in other structs. not sure how this is for struct file.
struct file is not embedded into other structures, so this should work. Committed to: SLE11-SP1 SLE11-SP1-RT SLE11-SP2 openSUSE-11.4 openSUSE-12.1
Committed to: SLE11-SP1-TD
Reassigning to security-team.
FYI, I've pushed this additional fix to SLE11-SP1-TD: - patches.fixes/epoll-dont-limit-non-nested.patch: Don't limit non-nested epoll paths (bnc#676204).
Hit commit too soon: the additional fix is already committed to all other branches listed in comment #8.
openSUSE-SU-2012:0540-1: An update that solves 6 vulnerabilities and has 17 fixes is now available. Category: security (low) Bug References: 676204,718918,719416,721739,722350,726600,729247,731387,731590,732908,738397,741128,744658,745832,746695,746980,747404,749569,749651,750079,750106,750959,755812 CVE References: CVE-2011-1083,CVE-2011-4077,CVE-2011-4086,CVE-2012-1090,CVE-2012-1097,CVE-2012-1146 Sources used: openSUSE 12.1 (src): kernel-docs-3.1.10-1.9.2, kernel-source-3.1.10-1.9.1, kernel-syms-3.1.10-1.9.1
We have just released a kernel update for SUSE Linux Enterprise 11 SP2 that mentions/fixes this bug. The released version is 3.0.26-0.7.6.
Update released for: cluster-network-kmp-default, cluster-network-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-hmac, kernel-default-man, kernel-source, 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-hmac, kernel-trace-man, ocfs2-kmp-default, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP2 (s390x) SLE-HAE 11-SP2 (s390x) SLE-SERVER 11-SP2 (s390x)
Update released for: cluster-network-kmp-default, cluster-network-kmp-ppc64, cluster-network-kmp-trace, gfs2-kmp-default, gfs2-kmp-ppc64, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-extra, kernel-default-hmac, kernel-ppc64, kernel-ppc64-base, kernel-ppc64-debuginfo, kernel-ppc64-debugsource, kernel-ppc64-devel, kernel-ppc64-extra, kernel-ppc64-hmac, kernel-source, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-extra, kernel-trace-hmac, ocfs2-kmp-default, ocfs2-kmp-ppc64, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP2 (ppc64) SLE-HAE 11-SP2 (ppc64) SLE-SERVER 11-SP2 (ppc64)
Update released for: cluster-network-kmp-default, cluster-network-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-hmac, kernel-source, 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-hmac, ocfs2-kmp-default, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP2 (ia64) SLE-HAE 11-SP2 (ia64) SLE-SERVER 11-SP2 (ia64)
Update released for: cluster-network-kmp-default, cluster-network-kmp-pae, cluster-network-kmp-trace, cluster-network-kmp-xen, gfs2-kmp-default, gfs2-kmp-pae, gfs2-kmp-trace, gfs2-kmp-xen, kernel-default, kernel-default-base, kernel-default-devel, kernel-default-extra, kernel-default-hmac, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-devel, kernel-ec2-extra, kernel-ec2-hmac, kernel-pae, kernel-pae-base, kernel-pae-devel, kernel-pae-extra, kernel-pae-hmac, kernel-source, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-devel, kernel-trace-extra, kernel-trace-hmac, kernel-xen, kernel-xen-base, kernel-xen-devel, kernel-xen-extra, kernel-xen-hmac, ocfs2-kmp-default, ocfs2-kmp-pae, ocfs2-kmp-trace, ocfs2-kmp-xen Products: SLE-DEBUGINFO 11-SP2 (i386) SLE-DESKTOP 11-SP2 (i386) SLE-HAE 11-SP2 (i386) SLE-SERVER 11-SP2 (i386) SLES4VMWARE 11-SP2 (i386)
Update released for: ext4-writeable-kmp-default, ext4-writeable-kmp-ppc64, kernel-default-extra, kernel-ppc64-extra Products: SLE-SERVER 11-EXTRA (ppc64)
Update released for: ext4-writeable-kmp-default, ext4-writeable-kmp-pae, ext4-writeable-kmp-xen, kernel-default-extra, kernel-pae-extra, kernel-xen-extra Products: SLE-SERVER 11-EXTRA (i386)
Update released for: ext4-writeable-kmp-default, kernel-default-extra Products: SLE-SERVER 11-EXTRA (ia64)
Update released for: kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-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 Products: SLE-SERVER 11-SP1-TERADATA (x86_64)
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-DESKTOP 11-SP1 (x86_64) SLE-HAE 11-SP1 (x86_64) SLE-SERVER 11-SP1 (x86_64) SLES4VMWARE 11-SP1 (x86_64)
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-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, ocfs2-kmp-default, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP1 (ia64) SLE-HAE 11-SP1 (ia64) SLE-SERVER 11-SP1 (ia64) SLE-SERVER 11-SP1-FOR-SP2 (ia64)
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-HAE 11-SP1 (s390x) SLE-SERVER 11-SP1 (s390x) SLE-SERVER 11-SP1-FOR-SP2 (s390x)
Update released for: btrfs-kmp-default, btrfs-kmp-ppc64, btrfs-kmp-trace, cluster-network-kmp-default, cluster-network-kmp-ppc64, cluster-network-kmp-trace, ext4dev-kmp-default, ext4dev-kmp-ppc64, ext4dev-kmp-trace, gfs2-kmp-default, gfs2-kmp-ppc64, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-extra, kernel-ppc64, kernel-ppc64-base, kernel-ppc64-debuginfo, kernel-ppc64-debugsource, kernel-ppc64-devel, kernel-ppc64-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-extra, ocfs2-kmp-default, ocfs2-kmp-ppc64, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP1 (ppc64) SLE-HAE 11-SP1 (ppc64) SLE-SERVER 11-SP1 (ppc64) SLE-SERVER 11-SP1-FOR-SP2 (ppc64)
Update released for: kernel-default-extra, kernel-xen-extra Products: SLE-SERVER 11-EXTRA (x86_64)
Update released for: kernel-default-extra, kernel-pae-extra, kernel-xen-extra Products: SLE-SERVER 11-EXTRA (i386)
Update released for: kernel-default-extra Products: SLE-SERVER 11-EXTRA (ia64)
Update released for: kernel-default-extra, kernel-ppc64-extra Products: SLE-SERVER 11-EXTRA (ppc64)
Update released for: kernel-default-extra Products: SLE-SERVER 11-EXTRA (s390x)
openSUSE-SU-2012:0799-1: An update that solves 25 vulnerabilities and has 22 fixes is now available. Category: security (moderate) Bug References: 466279,651219,653260,655696,676204,681186,681639,683671,689860,703410,707332,711941,713430,714455,717209,717749,721366,726045,726600,729247,730118,731673,732908,737624,738644,740448,740703,740745,744658,745832,746980,747038,747660,748859,749569,750079,750959,756203,756840,757278,758243,758260,758813,759545,760902,765102,765320 CVE References: CVE-2009-4020,CVE-2010-3873,CVE-2010-4164,CVE-2010-4249,CVE-2011-1083,CVE-2011-1173,CVE-2011-2517,CVE-2011-2700,CVE-2011-2909,CVE-2011-2928,CVE-2011-3619,CVE-2011-3638,CVE-2011-4077,CVE-2011-4086,CVE-2011-4330,CVE-2012-0038,CVE-2012-0044,CVE-2012-0207,CVE-2012-1090,CVE-2012-1097,CVE-2012-1146,CVE-2012-2119,CVE-2012-2123,CVE-2012-2136,CVE-2012-2663 Sources used: openSUSE 11.4 (src): kernel-docs-2.6.37.6-0.20.2, kernel-source-2.6.37.6-0.20.1, kernel-syms-2.6.37.6-0.20.1, preload-1.2-6.17.1
lets close
Update released for: brocade-bna-kmp-rt, cluster-network-kmp-rt, cluster-network-kmp-rt_trace, drbd-kmp-rt, drbd-kmp-rt_trace, iscsitarget-kmp-rt, kernel-rt, kernel-rt-base, kernel-rt-debuginfo, kernel-rt-debugsource, kernel-rt-devel, kernel-rt-devel-debuginfo, kernel-rt-extra, kernel-rt_trace, kernel-rt_trace-base, kernel-rt_trace-debuginfo, kernel-rt_trace-debugsource, kernel-rt_trace-devel, kernel-rt_trace-devel-debuginfo, kernel-rt_trace-extra, kernel-source-rt, kernel-syms-rt, ocfs2-kmp-rt, ocfs2-kmp-rt_trace, ofed-kmp-rt Products: SLE-RT 11-SP1 (x86_64)
Update released for: ext4-writeable-kmp-default, ext4-writeable-kmp-xen, kernel-default-extra, kernel-xen-extra Products: SLE-SERVER 11-EXTRA (x86_64)
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-devel, kernel-default-extra, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-devel, kernel-ec2-extra, kernel-pae, kernel-pae-base, kernel-pae-devel, kernel-pae-extra, kernel-source, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-devel, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-devel, kernel-xen-extra, ocfs2-kmp-default, ocfs2-kmp-pae, ocfs2-kmp-trace, ocfs2-kmp-xen Products: SLE-DEBUGINFO 11-SP1 (i386) SLE-DESKTOP 11-SP1 (i386) SLE-DESKTOP 11-SP1-FOR-SP2 (i386) SLE-HAE 11-SP1 (i386) SLE-SERVER 11-SP1 (i386) SLE-SERVER 11-SP1-FOR-SP2 (i386) SLES4VMWARE 11-SP1 (i386)
Update released for: cluster-network-kmp-default, cluster-network-kmp-trace, cluster-network-kmp-xen, gfs2-kmp-default, gfs2-kmp-trace, gfs2-kmp-xen, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-default-hmac, 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-ec2-hmac, kernel-source, 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-hmac, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, kernel-xen-hmac, ocfs2-kmp-default, ocfs2-kmp-trace, ocfs2-kmp-xen Products: SLE-DEBUGINFO 11-SP2 (x86_64) SLE-DESKTOP 11-SP2 (x86_64) SLE-HAE 11-SP2 (x86_64) SLE-SERVER 11-SP2 (x86_64) SLES4VMWARE 11-SP2 (x86_64)
openSUSE-SU-2012:1439-1: An update that solves 26 vulnerabilities and has 28 fixes is now available. Category: security (moderate) Bug References: 466279,651219,653260,655696,676204,681186,681639,683671,689860,703410,707332,711941,713430,714455,717209,717749,721366,726045,726600,729247,730118,731673,732908,734056,737624,738644,740448,740703,740745,744658,745832,746980,747038,747660,748859,749569,750079,750959,755546,756203,756840,757278,758243,758260,758813,759545,760902,765102,765320,769408,769784,769896,774285,781134 CVE References: CVE-2009-4020,CVE-2010-3873,CVE-2010-4164,CVE-2010-4249,CVE-2011-1083,CVE-2011-1173,CVE-2011-2517,CVE-2011-2700,CVE-2011-2909,CVE-2011-2928,CVE-2011-3619,CVE-2011-3638,CVE-2011-4077,CVE-2011-4086,CVE-2011-4110,CVE-2011-4330,CVE-2012-0038,CVE-2012-0044,CVE-2012-0207,CVE-2012-1090,CVE-2012-1097,CVE-2012-1146,CVE-2012-2119,CVE-2012-2123,CVE-2012-2136,CVE-2012-2663 Sources used: openSUSE 11.4 (src): kernel-docs-2.6.37.6-24.2, kernel-source-2.6.37.6-24.1, kernel-syms-2.6.37.6-24.1, preload-1.2-6.19.1