kernel: kvm: syscall instruction induced guest panic
Published Jul 3, 2012
4.7
MEDIUMCVSS 2.0
EPSS 1.01%
Description
The em_syscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 (aka syscall) opcode, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application, as demonstrated by an NASM file.
Affected products
No data.
- ≤ 3.2.13
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.0.12
- 3.0.13
- 3.0.14
- 3.0.15
- 3.0.16
- 3.0.17
- 3.0.18
- 3.0.19
- 3.0.20
- 3.0.21
- 3.0.22
- 3.0.23
- 3.0.24
- 3.0.25
- 3.0.26
- 3.0.27
- 3.0.28
- 3.0.29
- 3.0.30
- 3.0.31
- 3.0.32
- 3.0.33
- 3.0.34
- 3.1
- 3.1
- 3.1
- 3.1
- 3.1
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.1.5
- 3.1.6
- 3.1.7
- 3.1.8
- 3.1.9
- 3.1.10
- 3.2
- 3.2.1
- 3.2.2
- 3.2.3
- 3.2.4
- 3.2.5
- 3.2.6
- 3.2.7
- 3.2.8
- 3.2.9
- 3.2.10
- 3.2.11
- 3.2.12
No data.
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor6-0:6.2-20120320.0.el6_2
Fixed · RHSA-2012:0422
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.7.1.el6
Fixed · RHSA-2012:0350
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 5
kvm
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-6 | rhev-hypervisor6-0:6.2-20120320.0.el6_2 | Fixed | RHSA-2012:0422 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.7.1.el6 | Fixed | RHSA-2012:0350 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kvm | Not 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 Linux 4 and Red Hat Enterprise MRG as they did not provide support for the KVM subsystem. This issue did not affect the versions of kvm as shipped with Red Hat Enterprise Linux 5 as they did not include support for syscall instruction emulation. This has been addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2012-0350.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:M/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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.01% (0.01014) | 61.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.01% (0.01014) | 58.58th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.41% (0.00415) | 59.56th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00188) | 57.54th | v3 (v2023.03.01) |
| Apr 1, 2024 | 0.19% (0.00188) | 55.41th | v3 (v2023.03.01) |
| Nov 29, 2023 | 0.13% (0.00132) | 48.12th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00139) | 47.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.81% (0.02808) | 83.11th | v2 (v2022.01.01) |
| Feb 13, 2023 | 2.81% (0.02808) | 82.66th | v2 (v2022.01.01) |
| Feb 3, 2023 | 4.67% (0.04669) | 88.73th | v2 (v2022.01.01) |
| Sep 17, 2022 | 2.81% (0.02808) | 82.41th | v2 (v2022.01.01) |
| Jun 16, 2022 | 2.51% (0.02513) | 80.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.53% (0.02526) | 80.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.53% (0.02526) | 58.61th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html vendor-advisoryx_refsource_SUSE
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/01/12/2 mailing-listx_refsource_MLISTExploit
- https://access.redhat.com/security/cve/CVE-2012-0045 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=773370 x_refsource_CONFIRMExploitIssue Tracking
- https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84 x_refsource_CONFIRMExploitPatch
- https://nvd.nist.gov/vuln/detail/CVE-2012-0045
- https://www.cve.org/CVERecord?id=CVE-2012-0045
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c2226fc9e87ba3da060e47333657cd6616652b84 | x_refsource_CONFIRM | |
| http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html | vendor-advisoryx_refsource_SUSE | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.14 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2012/01/12/2 | mailing-listx_refsource_MLISTExploit | |
| https://access.redhat.com/security/cve/CVE-2012-0045 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=773370 | x_refsource_CONFIRMExploitIssue Tracking | |
| https://github.com/torvalds/linux/commit/c2226fc9e87ba3da060e47333657cd6616652b84 | x_refsource_CONFIRMExploitPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-0045 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-0045 |
Change history (0)
No recorded changes yet.