CVE-2016-4037

Severity: medium (CVSS 6.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-05-23 · updated 2026-06-17
Weakness: CWE-400

Description

The ehci_advance_state function in hw/usb/hcd-ehci.c in QEMU allows local guest OS administrators to cause a denial of service (infinite loop and CPU consumption) via a circular split isochronous transfer descriptor (siTD) list, a related issue to CVE-2015-8558.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.10, 16.04
Debian Linux: 8.0
Fedoraproject Fedora: 22, 23, 24
QEMU: through 2.5.1; 2.6.0-rc0, 2.6.0-rc1, 2.6.0-rc2

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1ae3f2f178087711f9591350abad133525ba93f2
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183275.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183350.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184209.html
http://www.openwall.com/lists/oss-security/2016/04/18/3
http://www.openwall.com/lists/oss-security/2016/04/18/6
http://www.securityfocus.com/bid/86283
http://www.ubuntu.com/usn/USN-2974-1
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg02691.html
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg02734.html
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1ae3f2f178087711f9591350abad133525ba93f2

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