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CVE-2010-3081

Publication date 15 September 2010

Last updated 24 July 2024

Ubuntu priority

High

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

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.

From the Ubuntu Security Team

Ben Hawkes discovered that the Linux kernel did not correctly validate memory ranges on 64bit kernels when allocating memory on behalf of 32bit system calls. On a 64bit system, a local attacker could perform malicious multicast getsockopt calls to gain root privileges.

Status

Package Ubuntu Release Status
linux 10.10 maverick
Fixed 2.6.35-22.32
10.04 LTS lucid
Fixed 2.6.32-24.43
9.10 karmic
Fixed 2.6.31-22.65
9.04 jaunty
Fixed 2.6.28-19.65
8.04 LTS hardy
Fixed 2.6.24-28.79
6.06 LTS dapper Not in release
linux-fsl-imx51 10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.31-608.22
9.10 karmic
Fixed 2.6.31-112.30
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-source-2.6.15 10.10 maverick Not in release
10.04 LTS lucid Not in release
9.10 karmic Not in release
9.04 jaunty Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper
Fixed 2.6.15-55.88
linux-ti-omap4 10.10 maverick
Fixed 2.6.35-903.22
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-988-1
    • Linux kernel vulnerabilities
    • 17 September 2010
    • USN-1074-1
    • Linux kernel vulnerabilities
    • 25 February 2011
    • USN-1119-1
    • Linux kernel (OMAP4) vulnerabilities
    • 20 April 2011
    • USN-1074-2
    • Linux kernel vulnerabilities
    • 28 February 2011

Other references