CVE-2010-4169: Use After Free
First published: Wed Nov 10 2010(Updated: )
Description of problem: Upstream commit dab5855 ("perf_counter: Add mmap event hooks to mprotect()") is fundamentally wrong as mprotect_fixup() can free 'vma' due to merging. Fix the problem by moving perf_event_mmap() hook to mprotect_fixup(). In certain scenario, a local, unprivileged user could use this flaw to trigger a denial of service. Upstream commit: <a href="http://git.kernel.org/linus/63bfd7384b119409685a17d5c58f0b56e5dc03da">http://git.kernel.org/linus/63bfd7384b119409685a17d5c58f0b56e5dc03da</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux-2.6 | ||
| Linux Kernel | <2.6.37 | |
| Linux Kernel | =2.6.37 | |
| Linux Kernel | =2.6.37-rc1 | |
| 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 |
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Reference Links
- http://git.kernel.org/linus/63bfd7384b119409685a17d5c58f0b56e5dc03da
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=651669
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=651670
- https://rhn.redhat.com/errata/RHSA-2010-0958.html
- https://rhn.redhat.com/errata/RHSA-2011-0283.html
- https://bugzilla.redhat.com/show_bug.cgi?id=651671
- http://secunia.com/advisories/42745
- http://secunia.com/advisories/42778
- http://secunia.com/advisories/42932
- http://www.securityfocus.com/bid/44861
- http://www.vupen.com/english/advisories/2010/3321
- http://www.vupen.com/english/advisories/2011/0012
- http://www.vupen.com/english/advisories/2011/0124
- http://www.vupen.com/english/advisories/2011/0298
- http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://marc.info/?l=oss-security&m=128979684911295&w=2
- http://marc.info/?l=oss-security&m=128984344103497&w=2
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=63bfd7384b119409685a17d5c58f0b56e5dc03da
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.37-rc2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/63316
- https://launchpad.net/bugs/cve/CVE-2010-4169
- https://security-tracker.debian.org/tracker/CVE-2010-4169
- http://marc.info/?l=oss-security&m=128979684911295&w=2
- http://marc.info/?l=oss-security&m=128984344103497&w=2
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4169
- https://nvd.nist.gov/vuln/detail/CVE-2010-4169
- https://ubuntu.com/security/CVE-2010-4169
Frequently Asked Questions
What is the severity of CVE-2010-4169?
CVE-2010-4169 has not been assigned a specific severity rating, but it poses a risk due to its potential exploitation by local, unprivileged users.
How do I fix CVE-2010-4169?
To fix CVE-2010-4169, you should upgrade your Linux kernel to a version greater than 2.6.37.
Which Linux distributions are affected by CVE-2010-4169?
CVE-2010-4169 affects various distributions, including Debian's linux-2.6, Fedora 13, and openSUSE 11.3.
Can CVE-2010-4169 be exploited remotely?
No, CVE-2010-4169 requires local access for exploitation, as it affects unprivileged local users.
What are the implications of CVE-2010-4169 for system security?
CVE-2010-4169 could allow an unprivileged user to affect system performance and stability through improper handling of memory protection.
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