--- title: "CVE-2010-4346\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2010-4346?format=md keywords: index, follow --- # CVE-2010-4346 Publication date 22 December 2010 Last updated 24 July 2024 --- Ubuntu priority **Low** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description The install\_special\_mapping function in mm/mmap.c in the Linux kernel before 2.6.37-rc6 does not make an expected security\_file\_mmap function call, which allows local users to bypass intended mmap\_min\_addr restrictions and possibly conduct NULL pointer dereference attacks via a crafted assembly-language application. ### From the Ubuntu Security Team Tavis Ormandy discovered that the install\_special\_mapping function could bypass the mmap\_min\_addr restriction. A local attacker could exploit this to mmap 4096 bytes below the mmap\_min\_addr area, possibly improving the chances of performing NULL pointer dereference attacks. [Read the notes from the security team](https://ubuntu.com/security/CVE-2010-4346?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | linux | 11.04 natty | Fixed 2.6.37-10.24 | | 10.10 maverick | Fixed 2.6.35-27.47 | | 10.04 LTS lucid | Fixed 2.6.32-29.57 | | 9.10 karmic | Ignored end of life, was pending | | 8.04 LTS hardy | Fixed 2.6.24-29.88 | | 6.06 LTS dapper | Not in release | | linux-ec2 | 11.04 natty | Not in release | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Fixed 2.6.32-313.25 | | 9.10 karmic | Ignored end of life | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-fsl-imx51 | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Fixed 2.6.31-609.26 | | 9.10 karmic | Ignored end of life | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-lts-backport-maverick | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Fixed 2.6.35-28.50~lucid1 | | 9.10 karmic | Not in release | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-lts-backport-natty | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not affected | | 8.04 LTS hardy | Not in release | | linux-mvl-dove | 11.04 natty | Not in release | | 10.10 maverick | Fixed 2.6.32-414.30 | | 10.04 LTS lucid | Fixed 2.6.32-214.30 | | 9.10 karmic | Ignored end of life | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | linux-source-2.6.15 | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 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 affected | | linux-ti-omap4 | 11.04 natty | Not affected | | 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 | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2010-4346?format=md#patch-details) ## Notes --- ### [kees](https://launchpad.net/~kees) Ubuntu mmap\_min\_addr default is 64k, so this isn't very interesting in our case ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | linux | * Upstream: | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4346) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2010-4346) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2010-4346) * [Debian](https://security-tracker.debian.org/tracker/CVE-2010-4346) ### Related Ubuntu Security Notices (USN) + [USN-1080-1](https://usn.ubuntu.com/USN-1080-1) + Linux kernel vulnerabilities + 1 March 2011 + [USN-1080-2](https://usn.ubuntu.com/USN-1080-2) + Linux kernel vulnerabilities + 2 March 2011 + [USN-1164-1](https://usn.ubuntu.com/USN-1164-1) + Linux kernel vulnerabilities (i.MX51) + 6 July 2011 + [USN-1105-1](https://usn.ubuntu.com/USN-1105-1) + Linux kernel vulnerabilities + 5 April 2011 + [USN-1081-1](https://usn.ubuntu.com/USN-1081-1) + Linux kernel vulnerabilities + 2 March 2011 + [USN-1187-1](https://usn.ubuntu.com/USN-1187-1) + Linux kernel (Maverick backport) vulnerabilities + 9 August 2011 + [USN-1119-1](https://usn.ubuntu.com/USN-1119-1) + Linux kernel (OMAP4) vulnerabilities + 20 April 2011 + [USN-1093-1](https://usn.ubuntu.com/USN-1093-1) + Linux Kernel vulnerabilities (Marvell Dove) + 25 March 2011 ### Other references *