CVE-2010-3081

high

Description

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.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c41d68a513c71e35a14f66d71782d27a79a81ea6

http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html

http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html

http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html

http://marc.info/?l=oss-security&m=128461522230211&w=2

https://access.redhat.com/kb/docs/DOC-40265

https://bugzilla.redhat.com/show_bug.cgi?id=634457

http://www.vmware.com/security/advisories/VMSA-2010-0017.html

http://www.vmware.com/security/advisories/VMSA-2011-0003.html

Details

Source: Mitre, NVD

Published: 2010-09-24

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High