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CVE-2013-1920

14
FAUCET Score

CVE-2013-1920 is a use-after-free vulnerability affecting Xen versions 4.2.x, 4.1.x, and earlier, specifically when the hypervisor is under memory pressure and the Xen Security Module (XSM) is enabled. This flaw arises from an incorrect ordering of operations when extending the per-domain event channel tracking table. With a CVSS score of 4.4, it allows local guest kernels to inject arbitrary events and potentially gain privileges through unspecified vectors. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.0.4:*:*:*:*:*:*:*
3.1.3CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.1.3:*:*:*:*:*:*:*
3.1.4CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.4MEDIUM

AV:L/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 58th percentile among its peer group of 1,595 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 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

gogspatch availablevia llm_extracted

Vendor Advisories (2)

redhatCVE-2013-1920Important

kernel: xen: potential use of freed memory in event channel operations

Apr 4, 2013
gogsllm-gogs-92526d9e224cc57c

Potential use of freed memory in event channel operations

Apr 4, 2013

References

lists.opensuse.org / opensuse-security-announce/2014-03/msg00015.html
lists.opensuse.org / opensuse-security-announce/2014-03/msg00021.html
lists.opensuse.org / opensuse-security-announce/2014-04/msg00000.html
lists.opensuse.org / opensuse-updates/2013-06/msg00049.html
lists.xen.org / archives/html/xen-announce/2013-04/msg00000.html
PatchVendor Advisory
osvdb.org / 92050
secunia.com / advisories/52857
Vendor Advisory
secunia.com / advisories/55082
security.gentoo.org / glsa/glsa-201309-24.xml
exchange.xforce.ibmcloud.com / vulnerabilities/83226
openwall.com / lists/oss-security/2013/04/04/7
securityfocus.com / bid/58880
securitytracker.com / id/1028388