kernel: kvm: irqchip_in_kernel() and vcpu->arch.apic inconsistency
Published May 17, 2012
4.9
MEDIUMCVSS 2.0
EPSS 0.41%
Description
The KVM implementation in the Linux kernel before 3.3.6 allows host OS users to cause a denial of service (NULL pointer dereference and host OS crash) by making a KVM_CREATE_IRQCHIP ioctl call after a virtual CPU already exists.
Affected products
No data.
- ≤ 3.3.5
No data.
Red Hat Enterprise Linux 5
kvm-0:83-249.el5_8.4
Fixed · RHSA-2012:0676
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.17.1.el6
Fixed · RHSA-2012:0571
Red Hat Enterprise Linux 5
kvm
Affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kvm-0:83-249.el5_8.4 | Fixed | RHSA-2012:0676 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.17.1.el6 | Fixed | RHSA-2012:0571 |
| Red Hat Enterprise Linux 5 | kvm | Affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise MRG as they did not provide support for the KVM subsystem. This has been addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2012-0571.html. This has been addressed in Red Hat Enterprise Linux 5 via RHSA-2012:0676 https://rhn.redhat.com/errata/RHSA-2012-0676.html.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.41% (0.00411) | 32.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00415) | 32.86th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00056) | 14.60th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.28% (0.01282) | 67.79th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.55% (0.01547) | 74.40th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
References (14)
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2012-0571.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2012-0676.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/49928 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2012/dsa-2469 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.6 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/03/30/1 mailing-listx_refsource_MLIST
- http://www.securitytracker.com/id?1026897 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2012-1601 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=808199 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/9c895160d25a76c21b65bad141b08e8d4f99afef x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2012-1601
- https://www.cve.org/CVERecord?id=CVE-2012-1601
- https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html vendor-advisoryx_refsource_SUSE
Change history (0)
No recorded changes yet.