kernel: kvm x86: NULL pointer dereference in kvm_apic_has_events function
Published Jul 27, 2015
4.9
MEDIUMCVSS 2.0
EPSS 0.45%
Description
The kvm_apic_has_events function in arch/x86/kvm/lapic.h in the Linux kernel through 4.1.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging /dev/kvm access for an ioctl call.
Affected products
No data.
- ≤ 4.1.3
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Will not fix
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 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Will not fix | 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 does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2. This issue affects the version of the kernel package as shipped with Red Hat Enterprise Linux 7.
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.45% (0.00451) | 36.88th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.45% (0.00451) | 35.63th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00084) | 22.14th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | 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) |
References (19)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce40cd3fc7fa40a6119e5fe6c0f2bc0eb4541009 x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160829.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/161144.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2015/dsa-3329 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2015/06/21/1 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/75142 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032798 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2680-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2681-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2682-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2683-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2684-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-4692 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1230770 x_refsource_CONFIRMVendor AdvisoryIssue Tracking
- https://github.com/torvalds/linux/commit/ce40cd3fc7fa40a6119e5fe6c0f2bc0eb4541009 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2015-4692
- https://www.cve.org/CVERecord?id=CVE-2015-4692
Change history (0)
No recorded changes yet.