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    CVE-2014-3640

    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.

    Published:Sep 17, 2014
    Last Modified:Apr 12, 2025
    EPS:Nov 7, 2014
    EPSS Score:0.00059
    CVSS Score:2.1

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Qemu
    Product
    Qemu
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Hpc Node
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High