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high 7.8

CVE-2013-1943 json

The KVM subsystem in the Linux kernel before 3.0 does not check whether kernel addresses are specified during allocation of memory slots fo…

published 13y ago modified 4mo ago also EUVD-2013-1935

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

The KVM subsystem in the Linux kernel before 3.0 does not check whether kernel addresses are specified during allocation of memory slots for use in a guest's physical address space, which allows local users to gain privileges or obtain sensitive information from kernel memory via a crafted application, related to arch/x86/kvm/paging_tmpl.h and virt/kvm/kvm_main.c.

Patch / fix

  • linux linux_kernel 3.0
  • kernel RHEL 6 2.6.32-358.11.1.el6
  • perf RHEL 6 2.6.32-358.11.1.el6
  • python-perf RHEL 6 2.6.32-358.11.1.el6
  • kernel-kdump RHEL 6 2.6.32-358.11.1.el6
  • kernel-firmware RHEL 6 2.6.32-358.11.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-358.11.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-358.11.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-358.11.1.el6

red hat advisories RHSA-2013:0911

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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-2013-1943 updated cvss 6.9

kernel: kvm: missing check in kvm_set_memory_region()

  • Red Hat Enterprise Linux 5 kvm
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-358.11.1.el6, kernel 2.6.32-358.11.1.el6, kernel-firmware 2.6.32-358.11.1.el6, kernel-debuginfo-common-i686 2.6.32-358.11.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.11.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-358.11.1.el6, python-perf 2.6.32-358.11.1.el6, kernel-debuginfo-common-i686 2.6.32-358.11.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.11.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-358.11.1.el6, kernel 2.6.32-358.11.1.el6, kernel-firmware 2.6.32-358.11.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.11.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-358.11.1.el6, python-perf 2.6.32-358.11.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.11.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-358.11.1.el6, kernel 2.6.32-358.11.1.el6, kernel-kdump 2.6.32-358.11.1.el6, kernel-firmware 2.6.32-358.11.1.el6, kernel-bootwrapper 2.6.32-358.11.1.el6, kernel-debuginfo-common-i686 2.6.32-358.11.1.el6, +3 more Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-358.11.1.el6, python-perf 2.6.32-358.11.1.el6, kernel-debuginfo-common-i686 2.6.32-358.11.1.el6, kernel-debuginfo-common-ppc64 2.6.32-358.11.1.el6, kernel-debuginfo-common-s390x 2.6.32-358.11.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.11.1.el6
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-358.11.1.el6, kernel 2.6.32-358.11.1.el6, kernel-firmware 2.6.32-358.11.1.el6, kernel-debuginfo-common-i686 2.6.32-358.11.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.11.1.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-358.11.1.el6, python-perf 2.6.32-358.11.1.el6, kernel-debuginfo-common-i686 2.6.32-358.11.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.11.1.el6
    fixed: vendor fix RHSA-2013:0911
  • 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

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

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.