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CVE-2013-1798

17
FAUCET Score

CVE-2013-1798 is a vulnerability in the ioapic_read_indirect function of the Linux kernel (through version 3.8.4) that allows guest OS users to access host OS memory or cause a denial of service. This medium-severity flaw (CVSS 6.2) requires adjacent network access and high attack complexity, but can lead to complete confidentiality and availability compromise of the host. There is no evidence of active exploitation, public exploit code, or significant community discussion 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

6.2MEDIUM

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

Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
3.2
Impact Score
9.2
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 98th 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-2013-1798Important

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

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
packetstormsecurity.com / files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.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/a2c118bfab8bc6b8bb213abfc35201e441693d55
ExploitPatch
mandriva.com / security/advisories
openwall.com / lists/oss-security/2013/03/20/9
ubuntu.com / usn/USN-1809-1
ubuntu.com / usn/USN-1812-1
ubuntu.com / usn/USN-1813-1