CVE-2014-7156 — Missing Authorization in XEN

CWE-264CWE-862 — Missing Authorization7 documents6 sources
Severity
3.3LOWNVD
EPSS
0.8%
top 25.90%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
XENDebian XEN
Timeline
PublishedOct 2
Latest updateMay 14

Description

The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

CVSS vector

AV:A/AC:L/C:N/I:N/A:PExploitability: 6.5 | Impact: 2.9

Affected Packages3 packages

▶debiandebian/xen< xen 4.4.1-3 (bookworm)
▶Debianxen/xen< 4.4.1-3+3
▶NVDxen/xen18 versions+17

Patches

Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-fwm9-x5p7-wwvw: The x86_emulate function in arch/x86/x86_emulate/x86_emulate↗2022-05-14
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OSV
CVE-2014-7156: The x86_emulate function in arch/x86/x86_emulate/x86_emulate↗2014-10-02
▶

📋Vendor Advisories

2
Red Hat
kernel: xen: Missing privilege level checks in x86 emulation of software interrupts (XSA-106)↗2014-09-23
▶
Debian
CVE-2014-7156: xen - The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x thro...↗2014
▶

💬Community

2
Bugzilla
CVE-2014-7156 kernel: xen: Missing privilege level checks in x86 emulation of software interrupts (xsa106) [fedora-all]↗2014-09-23
▶
Bugzilla
CVE-2014-7156 kernel: xen: Missing privilege level checks in x86 emulation of software interrupts (XSA-106)↗2014-09-10
▶