CVE-2013-1943 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fa3d315a4ce2c0891cdde262562e710d95fba19e http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0 http://www.ubuntu.com/usn/USN-1939-1 https://bugzilla.redhat.com/show_bug.cgi?id=950490 https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8