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CVE-2014-3640

11
FAUCET Score

CVE-2014-3640 describes a NULL pointer dereference vulnerability in the QEMU sosendto function (slirp/udp.c) affecting versions prior to 2.1.2, as well as Canonical, Debian, and Red Hat distributions. A local attacker can trigger a denial of service by sending a UDP packet with a zero-value source port and address, leading to access of an uninitialized socket. This vulnerability has a low CVSS score of 2.1 (AV:L/AC:L/Au:N/C:N/I:N/A:P), indicating a local attack vector with low complexity and a potential impact of partial availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.0.0:-:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.0.0:rc0:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.0.0:rc1:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:2.0.0:rc2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
33.1%
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 2,096 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 0.6 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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-10:1.5.3-86.el7
View patch
redhatpatch availablevia redhat_api
Product: RHEV 3.X Hypervisor and Agents for RHEL-7Fixed in: qemu-kvm-rhev-10:2.1.2-23.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm

Vendor Advisories (1)

redhatCVE-2014-3640Low

qemu: slirp: NULL pointer deref in sosendto()

Sep 17, 2014

References

lists.nongnu.org / archive/html/qemu-devel/2014-09/msg03543.html
PatchVendor Advisory
lists.nongnu.org / archive/html/qemu-devel/2014-09/msg04598.html
PatchVendor Advisory
lists.nongnu.org / archive/html/qemu-devel/2014-09/msg04707.html
PatchVendor Advisory
rhn.redhat.com / errata/RHSA-2015-0349.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-0624.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
debian.org / security/2014/dsa-3044
debian.org / security/2014/dsa-3045
Third Party Advisory
ubuntu.com / usn/USN-2409-1
Third Party Advisory