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Fencer Intel
low 2.6

CVE-2010-0730 json

The MMIO instruction decoder in the Xen hypervisor in the Linux kernel 2.6.18 in Red Hat Enterprise Linux (RHEL) 5 allows guest OS users to…

published 2010-05-11 16 y ago modified 2026-06-16 4 mo ago also EUVD-2010-0756

cvss
2.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

The MMIO instruction decoder in the Xen hypervisor in the Linux kernel 2.6.18 in Red Hat Enterprise Linux (RHEL) 5 allows guest OS users to cause a denial of service (32-bit guest OS crash) via vectors that trigger an unspecified instruction emulation.

Patch / fix

  • kernel RHEL 5 2.6.18-194.3.1.el5
  • kernel-PAE RHEL 5 2.6.18-194.3.1.el5
  • kernel-xen RHEL 5 2.6.18-194.3.1.el5
  • kernel-kdump RHEL 5 2.6.18-194.3.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-194.3.1.el5

red hat advisories RHSA-2010:0398

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2010-0730 updated cvss 4.7

xen: emulator instruction decoding inconsistency

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-194.3.1.el5, kernel-PAE 2.6.18-194.3.1.el5, kernel-xen 2.6.18-194.3.1.el5, kernel-kdump 2.6.18-194.3.1.el5, kernel-debuginfo-common 2.6.18-194.3.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-194.3.1.el5, kernel-PAE 2.6.18-194.3.1.el5, kernel-xen 2.6.18-194.3.1.el5, kernel-kdump 2.6.18-194.3.1.el5, kernel-debuginfo-common 2.6.18-194.3.1.el5
    fixed: vendor fix RHSA-2010:0398
  • Red Hat Enterprise Linux (v. 5 server) kernel-headers 2.6.18-194.3.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel-headers 2.6.18-194.3.1.el5
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.44% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 2.6 AV:N/AC:H/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.