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    CVE-2009-3616

    Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting during data transfer, (2) sending a message using incorrect integer data types, or (3) using the Fuzzy Screen Mode protocol, related to double free vulnerabilities.

    Published:Oct 23, 2009
    Last Modified:Apr 23, 2026
    EPS:Oct 23, 2009
    EPSS Score:0.00752
    CVSS Score:9.9

    Affected Products

    Vendor
    Qemu
    Product
    Qemu
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331https://bugzilla.redhat.com/show_bug.cgi?id=505641http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331https://bugzilla.redhat.com/show_bug.cgi?id=505641

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-6426 (CVSS 4.4) — A type mismatch vulnerability was found in QEMU's vhost inflight migration VMState handling. The destination b…
    CVE-2026-51082 (CVSS 7.2) — A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment (PVE) 9.x pve-…
    CVE-2026-3842 (CVSS 7.8) — A flaw was found in QEMU. This vulnerability allows a local attacker within a guest virtual machine to write d…
    CVE-2026-12080 (CVSS 7.3) — A flaw was found in the QEMU Guest Agent (qga). A local unprivileged user can exploit a vulnerability in the g…
    CVE-2026-3195 (CVSS 7.4) — A flaw was found in QEMU. When reading input audio in the virtio-snd device input callback, the `virtio_snd_pc…
    CVE-2026-3196 (CVSS 5.5) — An integer overflow vulnerability was found in the virtio-snd device via PCM_INFO requests from the guest. A m…
    CVE-2025-54566 (CVSS 4.2) — hw/pci/pcie_sriov.c in QEMU through 10.0.3 has a migration state inconsistency, a related issue to CVE-2024-26…
    CVE-2025-54567 (CVSS 4.2) — hw/pci/pcie_sriov.c in QEMU through 10.0.3 mishandles the VF Enable bit write mask, a related issue to CVE-202…
    CVE-2024-6519 (CVSS 8.2) — A use-after-free vulnerability was found in the QEMU LSI53C895A SCSI Host Bus Adapter emulation. This issue ca…
    CVE-2024-8354 (CVSS 5.5) — A flaw was found in QEMU. An assertion failure was present in the usb_ep_get() function in hw/net/core.c when …

    References

    http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5
    http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331
    http://marc.info/?l=qemu-devel&m=124324043812915
    http://rhn.redhat.com/errata/RHEA-2009-1272.html
    http://www.openwall.com/lists/oss-security/2009/10/16/5
    http://www.openwall.com/lists/oss-security/2009/10/16/8
    http://www.securityfocus.com/bid/36716
    https://bugzilla.redhat.com/show_bug.cgi?id=501131
    https://bugzilla.redhat.com/show_bug.cgi?id=505641
    https://bugzilla.redhat.com/show_bug.cgi?id=508567
    http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=198a0039c5
    http://git.savannah.gnu.org/cgit/qemu.git/commit/?id=753b405331
    http://marc.info/?l=qemu-devel&m=124324043812915
    http://rhn.redhat.com/errata/RHEA-2009-1272.html
    http://www.openwall.com/lists/oss-security/2009/10/16/5
    http://www.openwall.com/lists/oss-security/2009/10/16/8
    http://www.securityfocus.com/bid/36716
    https://bugzilla.redhat.com/show_bug.cgi?id=501131
    https://bugzilla.redhat.com/show_bug.cgi?id=505641
    https://bugzilla.redhat.com/show_bug.cgi?id=508567

    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