{"id":"UBUNTU-CVE-2016-7907","details":"The imx_fec_do_tx function in hw/net/imx_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.","modified":"2026-02-04T04:02:58.052767Z","published":"2016-10-05T00:00:00Z","related":["USN-3261-1"],"upstream":["CVE-2016-7907"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-7907"},{"type":"REPORT","url":"https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05556.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3261-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-7907"}],"affected":[{"package":{"name":"qemu","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/qemu@1:2.5+dfsg-5ubuntu10.11?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.5+dfsg-5ubuntu10.11"}]}],"versions":["1:2.3+dfsg-5ubuntu9","1:2.3+dfsg-5ubuntu10","1:2.4+dfsg-4ubuntu1","1:2.4+dfsg-4ubuntu2","1:2.4+dfsg-4ubuntu3","1:2.4+dfsg-5ubuntu3","1:2.5+dfsg-1ubuntu2","1:2.5+dfsg-1ubuntu3","1:2.5+dfsg-1ubuntu4","1:2.5+dfsg-1ubuntu5","1:2.5+dfsg-5ubuntu1","1:2.5+dfsg-5ubuntu2","1:2.5+dfsg-5ubuntu4","1:2.5+dfsg-5ubuntu6","1:2.5+dfsg-5ubuntu7","1:2.5+dfsg-5ubuntu10","1:2.5+dfsg-5ubuntu10.1","1:2.5+dfsg-5ubuntu10.2","1:2.5+dfsg-5ubuntu10.3","1:2.5+dfsg-5ubuntu10.4","1:2.5+dfsg-5ubuntu10.5","1:2.5+dfsg-5ubuntu10.6","1:2.5+dfsg-5ubuntu10.7","1:2.5+dfsg-5ubuntu10.8","1:2.5+dfsg-5ubuntu10.9","1:2.5+dfsg-5ubuntu10.10"],"ecosystem_specific":{"binaries":[{"binary_name":"qemu","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-block-extra","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-guest-agent","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-kvm","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-aarch64","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-arm","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-common","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-mips","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-misc","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-ppc","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-s390x","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-sparc","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-system-x86","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-user","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-user-binfmt","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-user-static","binary_version":"1:2.5+dfsg-5ubuntu10.11"},{"binary_name":"qemu-utils","binary_version":"1:2.5+dfsg-5ubuntu10.11"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-7907.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}