kernel: kvm: NULL pointer dereference during rip relative instruction emulation
Published Nov 10, 2014
4.9
MEDIUMCVSS 2.0
EPSS 0.63%
Description
The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 lacks intended decoder-table flags for certain RIP-relative instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application.
Affected products
No data.
- ≤ 3.18
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
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 | kernel | Not affected | n/a |
| 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
These issues do not affect Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. These issues do not affect 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.
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.63% (0.00630) | 48.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.63% (0.00630) | 45.25th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00096) | 24.63th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.12% (0.00121) | 48.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.12% (0.00124) | 45.07th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (9)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3f6f1480d86bf9fc16c160d803ab1d006e3058d5 x_refsource_CONFIRM
- http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2014/10/23/7 mailing-listx_refsource_MLISTExploit
- http://www.securityfocus.com/bid/70710 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2014-8480 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1156615 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/3f6f1480d86bf9fc16c160d803ab1d006e3058d5 x_refsource_CONFIRMExploit
- https://nvd.nist.gov/vuln/detail/CVE-2014-8480
- https://www.cve.org/CVERecord?id=CVE-2014-8480
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3f6f1480d86bf9fc16c160d803ab1d006e3058d5 | x_refsource_CONFIRM | |
| http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2014/10/23/7 | mailing-listx_refsource_MLISTExploit | |
| http://www.securityfocus.com/bid/70710 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2014-8480 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1156615 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/3f6f1480d86bf9fc16c160d803ab1d006e3058d5 | x_refsource_CONFIRMExploit | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-8480 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-8480 |
Change history (0)
No recorded changes yet.