CVE-2014-7155

Home/CVE/The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervis

CVE

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervis

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction.

MEDIUM · CVSS 5.8 EPSS 0.01034

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No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence

Sigma rules0 YARA rules0

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Affected Products & Versions

xen<= 4.4.0
xenall versions
debian linuxall versions
fedoraproject fedoraall versions
opensuseall versions

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Scoring & Timeline

5.8

MEDIUM · CVSS v2 (legacy) · cve@mitre.org

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This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.

v2 Vector

AV:A/AC:L/Au:N/C:P/I:P/A:P

Published to NVD02 Oct 2014 · 02:55 PM

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Vendor Advisories

suse-csafopenSUSE-SU-2024:10196-1

suse-csafSUSE-SU-2015:0940-1

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.htmlThird Party Advisory

http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.htmlThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.htmlThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.htmlThird Party Advisory

http://secunia.com/advisories/61858

http://secunia.com/advisories/61890

Show all 12 references

http://security.gentoo.org/glsa/glsa-201412-42.xml

http://support.citrix.com/article/CTX200218Third Party Advisory

http://www.debian.org/security/2014/dsa-3041Third Party Advisory

http://www.securityfocus.com/bid/70057Third Party AdvisoryVDB Entry

http://www.securitytracker.com/id/1030888Third Party AdvisoryVDB Entry

http://xenbits.xen.org/xsa/advisory-105.htmlPatchVendor Advisory

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