Buffer overflow in Linux Kernel
CVE-2010-3081
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.035 (89.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000
Affected products
- Linux Kernel — versions 2.6.36
- VMware Esx — versions 4.0, 4.1
- SUSE Linux Enterprise Desktop — versions 11
- SUSE Linux Enterprise Server — versions 11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.vmware.com/security/advisories/VMSA-2010-0017.html (Third Party Advisory)
- isc.sans.edu/diary.html (Patch, Third Party Advisory)
- www.vupen.com/english/advisories/2010/3083 (vdb-entry, Broken Link)
- www.vupen.com/english/advisories/2010/3117 (vdb-entry, Broken Link)
- sota.gen.nz/compat1/ (Broken Link)
- www.mandriva.com/security/advisories (vendor-advisory, Broken Link)
- access.redhat.com/kb/docs/DOC-40265 (Exploit, Patch, Third Party Advisory)
- www.securityfocus.com/archive/1/514938/30/30/threaded (mailing-list, VDB Entry, Third Party Advisory)
- secunia.com/advisories/42384 (Broken Link, third-party-advisory)
- archives.neohapsis.com/archives/fulldisclosure/2010-09/0278.html (mailing-list, Broken Link)
Frequently asked questions
- What is CVE-2010-3081?
- CVE-2010-3081 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2010-09-24.
- How severe is CVE-2010-3081?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2010-3081 known to be exploited?
- 64 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.