MEDIUM
kernel: kvm: reporting emulation failures to userspace
Published Nov 30, 2014
4.9
MEDIUMCVSS 2.0
EPSS 0.37%
Description
Race condition in arch/x86/kvm/x86.c in the Linux kernel before 3.17.4 allows guest OS users to cause a denial of service (guest OS crash) via a crafted application that performs an MMIO transaction or a PIO transaction to trigger a guest userspace emulation error report, a similar issue to CVE-2010-5313.
Affected products
No data.
OR
- ≤ 3.17.3
- 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
- 3.0.35
- 3.0.36
- 3.0.37
- 3.0.38
- 3.0.39
- 3.0.40
- 3.0.41
- 3.0.42
- 3.0.43
- 3.0.44
- 3.0.45
- 3.0.46
- 3.0.47
- 3.0.48
- 3.0.49
- 3.0.50
- 3.0.51
- 3.0.52
- 3.0.53
- 3.0.54
- 3.0.55
- 3.0.56
- 3.0.57
- 3.0.58
- 3.0.59
- 3.0.60
- 3.0.61
- 3.0.62
- 3.0.63
- 3.0.64
- 3.0.65
- 3.0.66
- 3.0.67
- 3.0.68
- 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
- 3.2
- 3.2
- 3.10
- 3.10.0
- 3.10.1
- 3.10.1
- 3.10.2
- 3.10.2
- 3.10.3
- 3.10.3
- 3.10.4
- 3.10.4
- 3.10.5
- 3.10.5
- 3.10.6
- 3.10.6
- 3.10.7
- 3.10.7
- 3.10.8
- 3.10.8
- 3.10.9
- 3.10.9
- 3.10.10
- 3.10.11
- 3.10.12
- 3.10.13
- 3.10.14
- 3.10.15
- 3.10.16
- 3.10.17
- 3.10.18
- 3.10.19
- 3.10.20
- 3.10.21
- 3.10.22
- 3.10.23
- 3.10.24
- 3.10.25
- 3.10.26
- 3.10.27
- 3.10.28
- 3.10.29
- 3.11
- 3.11.1
- 3.11.2
- 3.11.3
- 3.11.4
- 3.11.5
- 3.11.6
- 3.11.7
- 3.11.8
- 3.11.9
- 3.11.10
- 3.12
- 3.12.1
- 3.12.2
- 3.12.3
- 3.12.4
- 3.12.5
- 3.12.6
- 3.12.7
- 3.12.8
- 3.12.9
- 3.12.10
- 3.12.11
- 3.12.12
- 3.12.13
- 3.12.14
- 3.12.15
- 3.12.16
- 3.12.17
- 3.13
- 3.13.1
- 3.13.2
- 3.13.3
- 3.13.4
- 3.13.5
- 3.13.6
- 3.13.7
- 3.13.8
- 3.13.9
- 3.13.10
- 3.13.11
- 3.14
- 3.14
- 3.14
- 3.14
- 3.14
- 3.14
- 3.14
- 3.14
- 3.14
- 3.14.1
- 3.14.2
- 3.14.3
- 3.14.4
- 3.14.5
- 3.15
- 3.15.1
- 3.15.2
- 3.15.3
- 3.15.4
- 3.15.5
- 3.15.6
- 3.15.7
- 3.15.8
- 3.16.0
- 3.16.1
- 3.17
- 3.17.1
- 3.17.2
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-642.el6
Fixed · RHSA-2016:0855
Red Hat Enterprise Linux 7
kernel-0:3.10.0-327.el7
Fixed · RHSA-2015:2152
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-642.el6 | Fixed | RHSA-2016:0855 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-327.el7 | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | 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 kvm packages as shipped with Red Hat Enterprise Linux 5.
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.
4.9 MEDIUM NVD
AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.37% 0.00374
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00374
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.37% (0.00374) | 28.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.37% (0.00374) | 28.93th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00065) | 17.42th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00064) | 30.08th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.06% (0.00064) | 28.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00064) | 26.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
Weaknesses (1)
References (20)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a2b9e6c1a35afcc0973acb72e591c714e78885ff x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2016-0855.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/62305 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62326 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62336 third-party-advisoryx_refsource_SECUNIA
- http://www.openwall.com/lists/oss-security/2014/11/13/7 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/71078 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2014-7842 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1163762 x_refsource_CONFIRMVendor AdvisoryIssue Tracking
- https://github.com/torvalds/linux/commit/a2b9e6c1a35afcc0973acb72e591c714e78885ff x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2014-7842
- https://www.cve.org/CVERecord?id=CVE-2014-7842
- https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4 x_refsource_CONFIRMVendor Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Nov 30, 2014
Updated Aug 6, 2024
Reserved Oct 3, 2014
Link CVE-2014-7842
CISA Vulnrichment
Updated n/a