Bug 940776 (CVE-2015-5156)

Summary:	VUL-0: CVE-2015-5156: kernel: virt-io max-skb-frags heap overflow
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Johannes Segitz <jsegitz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	bpetkov, brogers, meissner, mhocko, smash_bz
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/119645/
Whiteboard:	CVSSv2:SUSE:CVE-2015-5156:6.0:(AV:L/AC:H/Au:S/C:C/I:C/A:C)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:
Bug Blocks:	945048

Description Johannes Segitz 2015-08-06 07:37:13 UTC

CVE-2015-5156

From: Wade Mealing 

When a guests KVM network devices is in a bridge configuration the kernel can 
create a situation in which packets are fragmented in an unexpected fashion. 
The GRO functionality can create a situation in which multiple SKB's are 
chained together in a single packets fraglist (by design).  

The virtio module declares support for NETIF_F_FRAGLIST and assumes that there
are at most MAX_SKB_FRAGS + 2 fragments which isn't always true with a 
fraglist, when GRO is enabled on the incoming driver it can create more fragments
than expected.

A longer than expected fragment list in the socket buffer will make the call
to skb_to_sgvec overflow the sg array, leading to memory corruption, and denial
of service.

An unprivileged attacker could use this flaw to crash the system resulting in DoS.

Red Hat would like to thank Jason Wang for reporting this issue.

Fixes: http://marc.info/?l=linux-netdev&m=143868216724068&w=2

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-5156
http://seclists.org/oss-sec/2015/q3/298
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5156

Comment 2 Swamp Workflow Management 2015-08-06 22:00:07 UTC

bugbot adjusting priority

Comment 4 Bruce Rogers 2015-09-08 21:30:30 UTC

As Alex is unavailable for an extended time, I'll take this bug.

Comment 5 Bruce Rogers 2015-09-17 16:59:36 UTC

Fix pushed to users/brogers/SLE12/for-next.

Comment 6 Swamp Workflow Management 2015-10-13 09:19:55 UTC

SUSE-SU-2015:1727-1: An update that solves 7 vulnerabilities and has 44 fixes is now available.

Category: security (important)
Bug References: 856382,886785,898159,907973,908950,912183,914818,916543,920016,922071,924722,929092,929871,930813,932285,932350,934430,934942,934962,936556,936773,937609,937612,937613,937616,938550,938706,938891,938892,938893,939145,939266,939716,939834,939994,940398,940545,940679,940776,940912,940925,940965,941098,941305,941908,941951,942160,942204,942307,942367,948536
CVE References: CVE-2015-5156,CVE-2015-5157,CVE-2015-5283,CVE-2015-5697,CVE-2015-6252,CVE-2015-6937,CVE-2015-7613
Sources used:
SUSE Linux Enterprise Workstation Extension 12 (src):    kernel-default-3.12.48-52.27.1
SUSE Linux Enterprise Software Development Kit 12 (src):    kernel-docs-3.12.48-52.27.2, kernel-obs-build-3.12.48-52.27.1
SUSE Linux Enterprise Server 12 (src):    kernel-default-3.12.48-52.27.1, kernel-source-3.12.48-52.27.1, kernel-syms-3.12.48-52.27.1, kernel-xen-3.12.48-52.27.2
SUSE Linux Enterprise Module for Public Cloud 12 (src):    kernel-ec2-3.12.48-52.27.1
SUSE Linux Enterprise Live Patching 12 (src):    kgraft-patch-SLE12_Update_8-1-2.6
SUSE Linux Enterprise Desktop 12 (src):    kernel-default-3.12.48-52.27.1, kernel-source-3.12.48-52.27.1, kernel-syms-3.12.48-52.27.1, kernel-xen-3.12.48-52.27.2

Comment 7 Michal Hocko 2015-11-02 08:42:59 UTC

(In reply to Bruce Rogers from comment #5)
> Fix pushed to users/brogers/SLE12/for-next.

I assume that older kernels are not affected. right?

Comment 8 Swamp Workflow Management 2015-12-17 15:14:23 UTC

SUSE-SU-2015:2292-1: An update that solves 7 vulnerabilities and has 54 fixes is now available.

Category: security (important)
Bug References: 758040,814440,904348,921949,924493,926238,933514,936773,939826,939926,940776,941113,941202,943959,944296,947241,947478,949100,949192,949706,949744,949936,950013,950580,950750,950998,951110,951165,951440,951638,951864,952384,952666,953717,953826,953830,953971,953980,954635,954986,955136,955148,955224,955354,955422,955533,955644,956047,956053,956147,956284,956703,956711,956717,956801,956876,957395,957546,958504,958510,958647
CVE References: CVE-2015-0272,CVE-2015-2925,CVE-2015-5156,CVE-2015-7799,CVE-2015-7872,CVE-2015-7990,CVE-2015-8215
Sources used:
SUSE Linux Enterprise Workstation Extension 12-SP1 (src):    kernel-default-3.12.51-60.20.2
SUSE Linux Enterprise Software Development Kit 12-SP1 (src):    kernel-docs-3.12.51-60.20.2, kernel-obs-build-3.12.51-60.20.1
SUSE Linux Enterprise Server 12-SP1 (src):    kernel-default-3.12.51-60.20.2, kernel-source-3.12.51-60.20.2, kernel-syms-3.12.51-60.20.2, kernel-xen-3.12.51-60.20.2
SUSE Linux Enterprise Module for Public Cloud 12 (src):    kernel-ec2-3.12.51-60.20.2
SUSE Linux Enterprise Live Patching 12 (src):    kgraft-patch-SLE12-SP1_Update_1-1-4.1
SUSE Linux Enterprise Desktop 12-SP1 (src):    kernel-default-3.12.51-60.20.2, kernel-source-3.12.51-60.20.2, kernel-syms-3.12.51-60.20.2, kernel-xen-3.12.51-60.20.2

Comment 9 Bruce Rogers 2016-01-07 21:54:52 UTC

(In reply to Michal Hocko from comment #7)
> (In reply to Bruce Rogers from comment #5)
> > Fix pushed to users/brogers/SLE12/for-next.
> 
> I assume that older kernels are not affected. right?

They are affected. As Alex is back, I'll return it to his queue.

Comment 10 Marcus Meissner 2016-08-01 12:17:16 UTC

not yet fixed for sle11

Comment 11 Marcus Meissner 2017-03-01 12:58:57 UTC

still not fixed for sle11.

Comment 12 Johannes Segitz 2017-08-10 14:25:58 UTC

Still unfixed for SLE 11. Kernel maintainers, please put this into the next SLE 11 kernel submit

Comment 16 Borislav Petkov 2018-02-09 11:35:44 UTC

cve/linux-3.0: pushed
cve/linux-2.6.32: pushed
cve/linux-2.6.16: doesn't have virtio
cve/linux-3.12: has it
12SP3: has it
12SP2: has it
SLE15: has it
master: has it
stable: has it

Bouncing back.

Comment 17 Swamp Workflow Management 2018-04-25 19:15:52 UTC

SUSE-SU-2018:1080-1: An update that solves 18 vulnerabilities and has 29 fixes is now available.

Category: security (important)
Bug References: 1010470,1013018,1039348,1052943,1062568,1062840,1063416,1063516,1065600,1065999,1067118,1067912,1068032,1072689,1072865,1075088,1075091,1075994,1078669,1078672,1078673,1078674,1080464,1080757,1080813,1081358,1082091,1082424,1083242,1083275,1083483,1083494,1084536,1085113,1085279,1085331,1085513,1086162,1087092,1087260,1087762,1088147,1088260,1089608,909077,940776,943786
CVE References: CVE-2015-5156,CVE-2016-7915,CVE-2017-0861,CVE-2017-12190,CVE-2017-13166,CVE-2017-16644,CVE-2017-16911,CVE-2017-16912,CVE-2017-16913,CVE-2017-16914,CVE-2017-18203,CVE-2017-18208,CVE-2017-5715,CVE-2018-10087,CVE-2018-6927,CVE-2018-7566,CVE-2018-7757,CVE-2018-8822
Sources used:
SUSE Linux Enterprise Software Development Kit 11-SP4 (src):    kernel-docs-3.0.101-108.38.1
SUSE Linux Enterprise Server 11-SP4 (src):    kernel-bigmem-3.0.101-108.38.1, kernel-default-3.0.101-108.38.1, kernel-ec2-3.0.101-108.38.1, kernel-pae-3.0.101-108.38.1, kernel-ppc64-3.0.101-108.38.1, kernel-source-3.0.101-108.38.1, kernel-syms-3.0.101-108.38.1, kernel-trace-3.0.101-108.38.1, kernel-xen-3.0.101-108.38.1
SUSE Linux Enterprise Server 11-EXTRA (src):    kernel-default-3.0.101-108.38.1, kernel-pae-3.0.101-108.38.1, kernel-ppc64-3.0.101-108.38.1, kernel-trace-3.0.101-108.38.1, kernel-xen-3.0.101-108.38.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    kernel-bigmem-3.0.101-108.38.1, kernel-default-3.0.101-108.38.1, kernel-ec2-3.0.101-108.38.1, kernel-pae-3.0.101-108.38.1, kernel-ppc64-3.0.101-108.38.1, kernel-trace-3.0.101-108.38.1, kernel-xen-3.0.101-108.38.1

Comment 18 Swamp Workflow Management 2018-05-08 22:14:10 UTC

SUSE-SU-2018:1172-1: An update that solves 20 vulnerabilities and has 11 fixes is now available.

Category: security (important)
Bug References: 1010470,1039348,1052943,1062568,1062840,1063416,1067118,1072689,1072865,1078669,1078672,1078673,1078674,1080464,1080757,1082424,1083242,1083483,1083494,1084536,1085331,1086162,1087088,1087209,1087260,1087762,1088147,1088260,1089608,1089752,940776
CVE References: CVE-2015-5156,CVE-2016-7915,CVE-2017-0861,CVE-2017-12190,CVE-2017-13166,CVE-2017-16644,CVE-2017-16911,CVE-2017-16912,CVE-2017-16913,CVE-2017-16914,CVE-2017-18203,CVE-2017-18208,CVE-2018-10087,CVE-2018-10124,CVE-2018-1087,CVE-2018-6927,CVE-2018-7566,CVE-2018-7757,CVE-2018-8822,CVE-2018-8897
Sources used:
SUSE Linux Enterprise Server 11-SP3-LTSS (src):    kernel-bigsmp-3.0.101-0.47.106.22.1, kernel-default-3.0.101-0.47.106.22.1, kernel-ec2-3.0.101-0.47.106.22.1, kernel-pae-3.0.101-0.47.106.22.1, kernel-source-3.0.101-0.47.106.22.1, kernel-syms-3.0.101-0.47.106.22.1, kernel-trace-3.0.101-0.47.106.22.1, kernel-xen-3.0.101-0.47.106.22.1
SUSE Linux Enterprise Server 11-EXTRA (src):    kernel-bigsmp-3.0.101-0.47.106.22.1, kernel-default-3.0.101-0.47.106.22.1, kernel-pae-3.0.101-0.47.106.22.1, kernel-ppc64-3.0.101-0.47.106.22.1, kernel-trace-3.0.101-0.47.106.22.1, kernel-xen-3.0.101-0.47.106.22.1
SUSE Linux Enterprise Point of Sale 11-SP3 (src):    kernel-default-3.0.101-0.47.106.22.1, kernel-ec2-3.0.101-0.47.106.22.1, kernel-pae-3.0.101-0.47.106.22.1, kernel-source-3.0.101-0.47.106.22.1, kernel-syms-3.0.101-0.47.106.22.1, kernel-trace-3.0.101-0.47.106.22.1, kernel-xen-3.0.101-0.47.106.22.1
SUSE Linux Enterprise Debuginfo 11-SP3 (src):    kernel-bigsmp-3.0.101-0.47.106.22.1, kernel-default-3.0.101-0.47.106.22.1, kernel-ec2-3.0.101-0.47.106.22.1, kernel-pae-3.0.101-0.47.106.22.1, kernel-trace-3.0.101-0.47.106.22.1, kernel-xen-3.0.101-0.47.106.22.1

Comment 19 Swamp Workflow Management 2018-05-16 19:20:34 UTC

SUSE-SU-2018:1309-1: An update that solves 18 vulnerabilities and has 36 fixes is now available.

Category: security (important)
Bug References: 1010470,1013018,1032084,1039348,1050431,1052943,1062568,1062840,1063416,1063516,1065600,1065999,1067118,1067912,1068032,1072689,1072865,1075088,1075091,1075994,1078669,1078672,1078673,1078674,1080464,1080757,1080813,1081358,1082091,1082424,1083242,1083275,1083483,1083494,1084536,1085113,1085279,1085331,1085513,1086162,1087092,1087209,1087260,1087762,1088147,1088260,1089608,1089665,1089668,1089752,909077,940776,943786,951638
CVE References: CVE-2015-5156,CVE-2016-7915,CVE-2017-0861,CVE-2017-12190,CVE-2017-13166,CVE-2017-16644,CVE-2017-16911,CVE-2017-16912,CVE-2017-16913,CVE-2017-16914,CVE-2017-18203,CVE-2017-18208,CVE-2018-10087,CVE-2018-10124,CVE-2018-6927,CVE-2018-7566,CVE-2018-7757,CVE-2018-8822
Sources used:
SUSE Linux Enterprise Real Time Extension 11-SP4 (src):    kernel-rt-3.0.101.rt130-69.24.1, kernel-rt_trace-3.0.101.rt130-69.24.1, kernel-source-rt-3.0.101.rt130-69.24.1, kernel-syms-rt-3.0.101.rt130-69.24.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    kernel-rt-3.0.101.rt130-69.24.1, kernel-rt_debug-3.0.101.rt130-69.24.1, kernel-rt_trace-3.0.101.rt130-69.24.1

Comment 20 Marcus Meissner 2018-09-10 13:43:28 UTC

released