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CVE-2010-3081Date: (C)2010-09-24   (M)2024-02-22


The compat_alloc_user_space functions in include/asm/compat.h files in the Linux kernel before 2.6.36-rc4-git2 on 64-bit platforms do not properly allocate the userspace memory required for the 32-bit compatibility layer, which allows local users to gain privileges by leveraging the ability of the compat_mc_getsockopt function (aka the MCAST_MSFILTER getsockopt support) to control a certain length value, related to a "stack pointer underflow" issue, as exploited in the wild in September 2010.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 7.2
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 5.9Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0273.html
http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0278.html
http://www.securityfocus.com/archive/1/514938/30/30/threaded
http://www.securityfocus.com/archive/1/516397/100/0/threaded
SECUNIA-42384
SECUNIA-43315
ADV-2010-3083
ADV-2010-3117
ADV-2011-0298
MDVSA-2010:198
MDVSA-2010:214
MDVSA-2010:247
RHSA-2010:0758
RHSA-2010:0842
RHSA-2010:0882
SUSE-SA:2010:050
SUSE-SA:2011:007
SUSE-SR:2010:017
http://marc.info/?l=oss-security&m=128461522230211&w=2
http://blog.ksplice.com/2010/09/cve-2010-3081/
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c41d68a513c71e35a14f66d71782d27a79a81ea6
http://isc.sans.edu/diary.html?storyid=9574
http://sota.gen.nz/compat1/
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.36-rc4-git2.log
http://www.vmware.com/security/advisories/VMSA-2010-0017.html
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
https://access.redhat.com/kb/docs/DOC-40265
https://bugzilla.redhat.com/show_bug.cgi?id=634457

CWE    1
CWE-119
OVAL    29
oval:org.secpod.oval:def:700243
oval:org.secpod.oval:def:500395
oval:org.secpod.oval:def:200098
oval:org.secpod.oval:def:500375
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