CVE-2015-8558

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% 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-835

Description

The ehci_process_itd 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 isochronous transfer descriptor (iTD) list.

Affected products

Debian Linux: 7.0, 8.0
QEMU: through 2.5.1.1

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=156a2e4dbffa85997636a7a39ef12da6f1b40254
http://www.debian.org/security/2016/dsa-3469
http://www.debian.org/security/2016/dsa-3470
http://www.debian.org/security/2016/dsa-3471
http://www.openwall.com/lists/oss-security/2015/12/14/16
http://www.openwall.com/lists/oss-security/2015/12/14/9
http://www.securityfocus.com/bid/80694
https://bugzilla.redhat.com/show_bug.cgi?id=1277983
https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg02124.html
https://security.gentoo.org/glsa/201602-01
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=156a2e4dbffa85997636a7a39ef12da6f1b40254
http://www.debian.org/security/2016/dsa-3469

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