CVE-2010-2962: Input Validation
First published: Mon Sep 27 2010(Updated: )
Description of problem: Kees found a flaw in the i915 GEM ioctl interface that does not check destination addresses during memory copies, allowing arbitrary memory writes into the kernel. The flaws are in drivers/gpu/drm/i915/i915_gem.c in i915_gem_pread_ioctl() and i915_gem_pwrite_ioctl(), which do no access_ok() checks on args->data_ptr. (Actually, there is one check path: i915_gem_gtt_pwrite_fast() does the check, but none of the other helpers do.). Acknowledgements: Red Hat would like to thank Kees Cook for reporting this issue.
Credit: security@ubuntu.com security@ubuntu.com security@ubuntu.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Linux Kernel | <2.6.36 | |
| Fedoraproject Fedora | =13 | |
| openSUSE | =11.3 | |
| SUSE Linux Enterprise Desktop with Beagle | =11-sp1 | |
| SUSE Linux Enterprise Real Time Extension | =11-sp1 | |
| SUSE Linux Enterprise Server | =11-sp1 | |
| Ubuntu Linux | =9.10 | |
| Ubuntu Linux | =10.04 | |
| Ubuntu Linux | =10.10 | |
| Fedora | =13 | |
| Ubuntu | =9.10 | |
| Ubuntu | =10.04 | |
| Ubuntu | =10.10 |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce9d419dbecc292cc3e06e8b1d6d123d3fa813a4
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36
- https://bugzilla.redhat.com/show_bug.cgi?id=637688
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00004.html
- http://www.redhat.com/support/errata/RHSA-2010-0842.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html
- http://secunia.com/advisories/42745
- http://www.vupen.com/english/advisories/2010/3321
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://www.ubuntu.com/usn/USN-1041-1
- http://www.securityfocus.com/bid/44067
- http://secunia.com/advisories/42758
- http://www.vupen.com/english/advisories/2011/0070
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://www.vupen.com/english/advisories/2011/0298
- https://launchpad.net/bugs/cve/CVE-2010-2962
- http://git.kernel.org/linus/ce9d419dbecc292cc3e06e8b1d6d123d3fa813a4
- https://rhn.redhat.com/errata/RHSA-2010-0842.html
- https://rhn.redhat.com/errata/RHSA-2010-0958.html
- https://security-tracker.debian.org/tracker/CVE-2010-2962
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ce9d419dbecc292cc3e06e8b1d6d123d3fa813a4
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2962
- https://nvd.nist.gov/vuln/detail/CVE-2010-2962
- https://ubuntu.com/security/CVE-2010-2962
Frequently Asked Questions
What is the severity of CVE-2010-2962?
CVE-2010-2962 is classified as a high severity vulnerability due to its potential for arbitrary memory writes into the kernel.
How do I fix CVE-2010-2962?
Fixing CVE-2010-2962 involves updating to a Linux kernel version later than 2.6.36 which includes the necessary patches.
Which systems are affected by CVE-2010-2962?
CVE-2010-2962 affects multiple Linux distributions, including Debian, Fedora, openSUSE, and various versions of Ubuntu.
What types of attacks can exploit CVE-2010-2962?
Exploitation of CVE-2010-2962 can lead to privilege escalation and the potential execution of arbitrary code within the kernel.
What are the main code components involved in CVE-2010-2962?
The vulnerability arises from flaws in the i915 GEM ioctl interface, specifically in the i915_gem_pread_ioctl() and i915_gem_pwrite_ioctl() functions.
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