kernel: kvm: buffer overflow in handling of MSR_KVM_SYSTEM_TIME
Published Mar 22, 2013
6.8
MEDIUMCVSS 2.0
EPSS 0.95%
Description
The kvm_set_msr_common function in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 does not ensure a required time_page alignment during an MSR_KVM_SYSTEM_TIME operation, which allows guest OS users to cause a denial of service (buffer overflow and host OS memory corruption) or possibly have unspecified other impact via a crafted application.
Affected products
No data.
- ≤ 3.8.4
- 3.8.0
- 3.8.1
- 3.8.2
- 3.8.3
No data.
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor6-0:6.4-20130415.0.el6_4
Fixed · RHSA-2013:0746
Red Hat Enterprise Linux 5
kvm-0:83-262.el5_9.3
Fixed · RHSA-2013:0727
Red Hat Enterprise Linux 6
kernel-0:2.6.32-358.6.1.el6
Fixed · RHSA-2013:0744
Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only
kernel-0:2.6.32-220.39.1.el6
Fixed · RHSA-2013:1026
Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only
kernel-0:2.6.32-279.31.1.el6
Fixed · RHSA-2013:0928
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 5
kvm
Affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-6 | rhev-hypervisor6-0:6.4-20130415.0.el6_4 | Fixed | RHSA-2013:0746 |
| Red Hat Enterprise Linux 5 | kvm-0:83-262.el5_9.3 | Fixed | RHSA-2013:0727 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-358.6.1.el6 | Fixed | RHSA-2013:0744 |
| Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node Only | kernel-0:2.6.32-220.39.1.el6 | Fixed | RHSA-2013:1026 |
| Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only | kernel-0:2.6.32-279.31.1.el6 | Fixed | RHSA-2013:0928 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| 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 Linux 5 and Red Hat Enterprise MRG as they did not provide support for the KVM subsystem.
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:A/AC:H/Au:N/C:C/I:C/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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.95% (0.00946) | 59.73th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.95% (0.00954) | 56.60th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.78% (0.00778) | 71.95th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.34% (0.00337) | 72.16th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.24% (0.00237) | 61.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.24% (0.00237) | 59.97th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (22)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c300aa64ddf57d9c5d9c898a64b36877345dd4a9 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2013-0727.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0744.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0746.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0928.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-1026.html vendor-advisoryx_refsource_REDHAT
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2013/03/20/9 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/58607 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1805-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1808-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1809-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1812-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1813-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2013-1796 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=917012 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/c300aa64ddf57d9c5d9c898a64b36877345dd4a9 x_refsource_CONFIRMPatch
- https://nvd.nist.gov/vuln/detail/CVE-2013-1796
- https://www.cve.org/CVERecord?id=CVE-2013-1796
Change history (0)
No recorded changes yet.