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Vulnerability record · CVE-2014-3640 · published 7 November 2014

CVE-2014-3640: Debian linux null pointer dereference vulnerability

Debian · Debian Linux

The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket.

2.1 CVSS 2.0 Low EPSS 0.40% · top 67.8% CWE-476 · NULL pointer dereference
2.1CVSS 2.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

The sosendto function in slirp/udp.c in QEMU before 2.1.2 allows local users to cause a denial of service (NULL pointer dereference) by sending a udp packet with a value of 0 in the source port and address, which triggers access of an uninitialized socket.

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg03543.html PatchVendor Advisory
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04598.html PatchVendor Advisory
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04707.html PatchVendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-0349.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-0624.html Third Party Advisory
http://www.debian.org/security/2014/dsa-3044
http://www.debian.org/security/2014/dsa-3045 Third Party Advisory
http://www.ubuntu.com/usn/USN-2409-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1144818 Issue Tracking
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg03543.html PatchVendor Advisory
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04598.html PatchVendor Advisory
http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04707.html PatchVendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-0349.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-0624.html Third Party Advisory
http://www.debian.org/security/2014/dsa-3044
http://www.debian.org/security/2014/dsa-3045 Third Party Advisory
http://www.ubuntu.com/usn/USN-2409-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1144818 Issue Tracking

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Source: NIST National Vulnerability Database (record CVE-2014-3640), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.