CVE-2010-3081

high-risk
Published 2010-09-24

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.

Do I need to act?

~
7.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
15024
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (9)

Esx
Esx

Affected Vendors

Linux Vmware Suse

References (56)

Broken Link http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0273.html
Broken Link http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0278.html
Broken Link 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=...
Patch http://isc.sans.edu/diary.html?storyid=9574
Mailing List http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
Mailing List http://marc.info/?l=oss-security&m=128461522230211&w=2
Broken Link http://secunia.com/advisories/42384
Broken Link http://secunia.com/advisories/43315
Broken Link http://sota.gen.nz/compat1/
Broken Link http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.36-rc4-git2.log
Broken Link http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
Broken Link http://www.mandriva.com/security/advisories?name=MDVSA-2010:214
Broken Link http://www.mandriva.com/security/advisories?name=MDVSA-2010:247
Broken Link http://www.redhat.com/support/errata/RHSA-2010-0758.html
Broken Link http://www.redhat.com/support/errata/RHSA-2010-0842.html
Broken Link http://www.redhat.com/support/errata/RHSA-2010-0882.html
Third Party Advisory http://www.securityfocus.com/archive/1/514938/30/30/threaded
and 36 more references
55
/ 100
high-risk
Severity 24/34 · High
Exploitability 16/34 · Moderate
Exposure 15/34 · Moderate