Vulnerability Details : CVE-2014-8480
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2014-8480
- cpe:2.3:o:linux:linux_kernel:*:rc1:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2014-8480
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2014-8480
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST |
CWE ids for CVE-2014-8480
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2014-8480
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http://www.securityfocus.com/bid/70710
Linux Kernel KVM CVE-2014-8480 Denial of Service Vulnerability
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https://github.com/torvalds/linux/commit/3f6f1480d86bf9fc16c160d803ab1d006e3058d5
KVM: x86: PREFETCH and HINT_NOP should have SrcMem flag · torvalds/linux@3f6f148 · GitHubExploit
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http://www.openwall.com/lists/oss-security/2014/10/23/7
oss-security - CVE Request: Linux 3.17 guest-triggerable KVM OOPSExploit
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http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3f6f1480d86bf9fc16c160d803ab1d006e3058d5
kernel/git/torvalds/linux.git - Linux kernel source treeExploit
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https://bugzilla.redhat.com/show_bug.cgi?id=1156615
1156615 – (CVE-2014-8480, CVE-2014-8481) CVE-2014-8480 CVE-2014-8481 kernel: kvm: NULL pointer dereference during rip relative instruction emulation
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