CVE-2012-1601: Null Pointer Dereference
First published: Thu Mar 29 2012(Updated: )
If some vcpus are created before KVM_CREATE_IRQCHIP, then irqchip_in_kernel() and vcpu->arch.apic will be inconsistent, leading to potential NULL pointer dereferences. A unprivileged local user could use this flaw to crash the system. References: <a href="http://comments.gmane.org/gmane.comp.emulators.kvm.devel/86217">http://comments.gmane.org/gmane.comp.emulators.kvm.devel/86217</a> <a href="http://git.kernel.org/?p=virt/kvm/kvm.git;a=commit;h=5b40572ed5f0344b9dbee486a17c589ce1abe1a3">http://git.kernel.org/?p=virt/kvm/kvm.git;a=commit;h=5b40572ed5f0344b9dbee486a17c589ce1abe1a3</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <=3.3.5 | |
| debian/linux-2.6 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
- http://rhn.redhat.com/errata/RHSA-2012-0571.html
- http://rhn.redhat.com/errata/RHSA-2012-0676.html
- http://secunia.com/advisories/49928
- http://www.debian.org/security/2012/dsa-2469
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.6
- http://www.openwall.com/lists/oss-security/2012/03/30/1
- http://www.securitytracker.com/id?1026897
- https://bugzilla.redhat.com/show_bug.cgi?id=808199
- https://github.com/torvalds/linux/commit/9c895160d25a76c21b65bad141b08e8d4f99afef
- https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html
- https://launchpad.net/bugs/cve/CVE-2012-1601
- http://comments.gmane.org/gmane.comp.emulators.kvm.devel/86217
- http://git.kernel.org/?p=virt/kvm/kvm.git;a=commit;h=5b40572ed5f0344b9dbee486a17c589ce1abe1a3
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=808207
- https://rhn.redhat.com/errata/RHSA-2012-0571.html
- https://rhn.redhat.com/errata/RHSA-2012-0676.html
- https://security-tracker.debian.org/tracker/CVE-2012-1601
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1601
- https://nvd.nist.gov/vuln/detail/CVE-2012-1601
- https://ubuntu.com/security/CVE-2012-1601
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