kernel: kvm: mmio_fragments out-of-the-bounds access
Published Mar 11, 2014
7.4
HIGHCVSS 2.0
EPSS 0.78%
Description
Buffer overflow in the complete_emulated_mmio function in arch/x86/kvm/x86.c in the Linux kernel before 3.13.6 allows guest OS users to execute arbitrary code on the host OS by leveraging a loop that triggers an invalid memory copy affecting certain cancel_work_item data.
Affected products
No data.
- < 3.13.6
No data.
Red Hat Enterprise Linux 5
kvm
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kvm | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | 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
Not vulnerable. This issue did not affect the versions of kvm package as shipped with Red Hat Enterprise Linux 5 as they did not backport the upstream kvm commit that introduced this issue. This issue did not affect the versions of Linux kernel as shipped Red Hat Enterprise Linux 6 as they did not backport the upstream kvm commit that introduced this issue. This issue did not affect the versions of Linux kernel as shipped 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:M/Au:S/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.78% (0.00775) | 54.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.77% (0.00769) | 50.60th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.37% (0.00368) | 55.79th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.56% (0.01561) | 69.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.37% (0.00368) | 56.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00261) | 66.38th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.26% (0.00261) | 64.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.26% (0.00261) | 62.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.82% (0.01818) | 77.09th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.82% (0.01818) | 77.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.82% (0.01818) | 75.02th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.82% (0.01818) | 54.37th | v2 (v2022.01.01) |
References (8)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a08d3b3b99efd509133946056531cdf8f3a0c09b x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.6 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2014/03/03/1 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-0049 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1062368 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/a08d3b3b99efd509133946056531cdf8f3a0c09b x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2014-0049
- https://www.cve.org/CVERecord?id=CVE-2014-0049
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a08d3b3b99efd509133946056531cdf8f3a0c09b | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.6 | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2014/03/03/1 | mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2014-0049 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1062368 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://github.com/torvalds/linux/commit/a08d3b3b99efd509133946056531cdf8f3a0c09b | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-0049 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-0049 |
Change history (0)
No recorded changes yet.