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Fencer Intel
medium 6.6

CVE-2010-2784 json

The subpage MMIO initialization functionality in the subpage_register function in exec.c in QEMU-KVM, as used in the Hypervisor (aka rhev-h…

published 16y ago modified 4mo ago also EUVD-2010-2788

cvss
6.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

The subpage MMIO initialization functionality in the subpage_register function in exec.c in QEMU-KVM, as used in the Hypervisor (aka rhev-hypervisor) in Red Hat Enterprise Virtualization (RHEV) 2.2 and KVM 83, does not properly select the index for access to the callback array, which allows guest OS users to cause a denial of service (guest OS crash) or possibly gain privileges via unspecified vectors.

Patch / fix

  • kvm RHEL 5 VIRTUALIZATION 83-164.el5_5.21
  • kmod-kvm RHEL 5 VIRTUALIZATION 83-164.el5_5.21
  • kvm-tools RHEL 5 VIRTUALIZATION 83-164.el5_5.21
  • kvm-qemu-img RHEL 5 VIRTUALIZATION 83-164.el5_5.21
  • rhev-hypervisor RHEL 5 5.5-2.2.6.1.el5_5rhev2_2
  • rhev-hypervisor-pxe RHEL 5 5.5-2.2.6.1.el5_5rhev2_2

red hat advisories RHSA-2010:0627RHSA-2010:0622

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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-2010-2784 updated cvss 6.6

qemu: insufficient constraints checking in exec.c:subpage_register()

  • Red Hat Enterprise Linux Desktop Multi OS (v. 5 client) kvm 83-164.el5_5.21, kmod-kvm 83-164.el5_5.21, kvm-tools 83-164.el5_5.21, kvm-qemu-img 83-164.el5_5.21 Red Hat Enterprise Linux Virtualization (v. 5 server) kvm 83-164.el5_5.21, kmod-kvm 83-164.el5_5.21, kvm-tools 83-164.el5_5.21, kvm-qemu-img 83-164.el5_5.21
    fixed: vendor fix RHSA-2010:0627
  • Red Hat Enterprise Virtualization Hypervisor 5 rhev-hypervisor 5.5-2.2.6.1.el5_5rhev2_2, rhev-hypervisor-pxe 5.5-2.2.6.1.el5_5rhev2_2
    fixed: vendor fix RHSA-2010:0622
  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32
    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

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.6 AV:L/AC:M/Au:S/C:C/I:C/A:C

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

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.