VulnerabilityModified

CVE-2013-1943

HIGH 7.8EPSS 0.45%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.45%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.45% probability · 38th percentile
CISA KEV: Not listed
Weakness: CWE-20
Affected: linux/linux kernel · redhat/enterprise linux · redhat/enterprise linux eus · canonical/ubuntu linux
Source: secalert@redhat.com

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e
http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0Broken Link
http://www.ubuntu.com/usn/USN-1939-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=950490Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19ePatch, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e
http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0Broken Link
http://www.ubuntu.com/usn/USN-1939-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=950490Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19ePatch, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.