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CVE-2013-1796

18
FAUCET Score

CVE-2013-1796 describes a buffer overflow vulnerability in the Linux kernel's KVM virtualization component (kvm_set_msr_common function) affecting versions up to 3.8.4. This flaw arises from improper alignment handling during MSR_KVM_SYSTEM_TIME operations. With a CVSS score of 6.8, this vulnerability is of medium severity, allowing a guest OS user to cause a denial of service through host OS memory corruption, or potentially other unspecified impacts, requiring adjacent network access and high attack complexity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.8.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
3.8.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.8.0:*:*:*:*:*:*:*
3.8.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.8.1:*:*:*:*:*:*:*
3.8.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.8.2:*:*:*:*:*:*:*
3.8.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.8.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:A/AC:H/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
3.2
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.95%
Probability of exploitation in next 30 days
EPSS Percentile
57.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0095 is in the 95th percentile among its peer group of 1,749 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kvm-0:83-262.el5_9.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-358.6.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.2 EUS - Server and Compute Node OnlyFixed in: kernel-0:2.6.32-220.39.1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node OnlyFixed in: kernel-0:2.6.32-279.31.1.el6
View patch
redhatpatch availablevia redhat_api
Product: RHEV 3.X Hypervisor and Agents for RHEL-6Fixed in: rhev-hypervisor6-0:6.4-20130415.0.el6_4
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kvm

Vendor Advisories (1)

redhatCVE-2013-1796Important

kernel: kvm: buffer overflow in handling of MSR_KVM_SYSTEM_TIME

Mar 20, 2013

References

git.kernel.org
lists.opensuse.org / opensuse-security-announce/2013-05/msg00018.html
lists.opensuse.org / opensuse-security-announce/2013-06/msg00005.html
lists.opensuse.org / opensuse-security-announce/2013-07/msg00018.html
rhn.redhat.com / errata/RHSA-2013-0727.html
rhn.redhat.com / errata/RHSA-2013-0744.html
rhn.redhat.com / errata/RHSA-2013-0746.html
rhn.redhat.com / errata/RHSA-2013-0928.html
rhn.redhat.com / errata/RHSA-2013-1026.html
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/c300aa64ddf57d9c5d9c898a64b36877345dd4a9
Patch
mandriva.com / security/advisories
openwall.com / lists/oss-security/2013/03/20/9
securityfocus.com / bid/58607
ubuntu.com / usn/USN-1805-1
ubuntu.com / usn/USN-1808-1
ubuntu.com / usn/USN-1809-1
ubuntu.com / usn/USN-1812-1
ubuntu.com / usn/USN-1813-1