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Fencer Intel
medium 6.2

CVE-2013-1798 json

The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of…

published 13y ago modified 4mo ago also EUVD-2013-1822

cvss
6.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.2.41-2

debian advisories DEBIAN-CVE-2013-1798

  • kernel RHEL 6 2.6.32-358.6.1.el6
  • perf RHEL 6 2.6.32-358.6.1.el6
  • python-perf RHEL 6 2.6.32-358.6.1.el6
  • kernel-kdump RHEL 6 2.6.32-358.6.1.el6
  • kernel-firmware RHEL 6 2.6.32-358.6.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-358.6.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-358.6.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-358.6.1.el6

red hat advisories RHSA-2013:0744RHSA-2013:0928RHSA-2013:1026RHSA-2013:0746RHSA-2013:0727

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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-2013-1798 updated cvss 5.9

kernel: kvm: out-of-bounds access in ioapic indirect register reads

  • Red Hat Enterprise Linux 5 kvm
    affected: no fix available
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-kdump 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-bootwrapper 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, +3 more
    fixed: vendor fix RHSA-2013:0744
  • Red Hat Enterprise Linux Server EUS (v. 6.2) perf 2.6.32-220.39.1.el6, kernel 2.6.32-220.39.1.el6, kernel-kdump 2.6.32-220.39.1.el6, kernel-firmware 2.6.32-220.39.1.el6, kernel-bootwrapper 2.6.32-220.39.1.el6, kernel-debuginfo-common-i686 2.6.32-220.39.1.el6, +3 more
    fixed: vendor fix RHSA-2013:1026
  • Red Hat Enterprise Linux Server EUS (v. 6.3) perf 2.6.32-279.31.1.el6, kernel 2.6.32-279.31.1.el6, kernel-kdump 2.6.32-279.31.1.el6, kernel-firmware 2.6.32-279.31.1.el6, kernel-bootwrapper 2.6.32-279.31.1.el6, kernel-debuginfo-common-i686 2.6.32-279.31.1.el6, +3 more
    fixed: vendor fix RHSA-2013:0928
  • Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-ppc64 2.6.32-358.6.1.el6, kernel-debuginfo-common-s390x 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6
    fixed: vendor fix RHSA-2013:0744
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.2) kernel 2.6.32-220.39.1.el6, python-perf 2.6.32-220.39.1.el6, kernel-debuginfo-common-i686 2.6.32-220.39.1.el6, kernel-debuginfo-common-ppc64 2.6.32-220.39.1.el6, kernel-debuginfo-common-s390x 2.6.32-220.39.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.39.1.el6
    fixed: vendor fix RHSA-2013:1026
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.3) kernel 2.6.32-279.31.1.el6, python-perf 2.6.32-279.31.1.el6, kernel-debuginfo-common-i686 2.6.32-279.31.1.el6, kernel-debuginfo-common-ppc64 2.6.32-279.31.1.el6, kernel-debuginfo-common-s390x 2.6.32-279.31.1.el6, kernel-debuginfo-common-x86_64 2.6.32-279.31.1.el6
    fixed: vendor fix RHSA-2013:0928
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-358.6.1.el6, kernel 2.6.32-358.6.1.el6, kernel-firmware 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-358.6.1.el6, python-perf 2.6.32-358.6.1.el6, kernel-debuginfo-common-i686 2.6.32-358.6.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.6.1.el6
    fixed: vendor fix RHSA-2013:0744
show 3 more
  • Red Hat RHEL Virtualization (v. 5 server) kvm 83-262.el5_9.3, kmod-kvm 83-262.el5_9.3, kvm-tools 83-262.el5_9.3, kvm-qemu-img 83-262.el5_9.3
    fixed: vendor fix RHSA-2013:0727
  • Red Hat RHEV Hypervisor for RHEL-6 rhev-hypervisor6 6.4-20130415.0.el6_4
    fixed: vendor fix RHSA-2013:0746
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    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

1.35% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/a2c118bfab8bc6b8bb213abfc35201e441693d55 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.2 AV:A/AC:H/Au:N/C:C/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

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.