| Summary: | <app-emulation/qemu-2.5.0-r1: usb: infinite loop in ehci_advance_state results in DoS (CVE-2015-8558) | ||
|---|---|---|---|
| Product: | Gentoo Security | Reporter: | Agostino Sarubbo <ago> |
| Component: | Vulnerabilities | Assignee: | Gentoo Security <security> |
| Status: | RESOLVED FIXED | ||
| Severity: | minor | CC: | qemu+disabled |
| Priority: | Normal | ||
| Version: | unspecified | ||
| Hardware: | All | ||
| OS: | Linux | ||
| URL: | http://git.qemu.org/?p=qemu.git;a=commitdiff;h=156a2e4dbffa85997636a7a39ef12da6f1b40254 | ||
| Whiteboard: | B3 [glsa cve] | ||
| Package list: | Runtime testing required: | --- | |
fix is in qemu-2.5.0-r1 in the tree now http://gitweb.gentoo.org/repo/gentoo.git/commit/?id=96bdea53ec5c2e6d80e30b288043e34bfc766e25 The stabilization happened in bug 571566 Added to existing GLSA draft This issue was resolved and addressed in GLSA 201602-01 at https://security.gentoo.org/glsa/201602-01 by GLSA coordinator Kristian Fiskerstrand (K_F). *** Bug 580426 has been marked as a duplicate of this bug. *** |
From ${URL} : Qemu emulator built with the USB EHCI emulation support is vulnerable to an infinite loop issue. It occurs during communication between host controller interface(EHCI) and a respective device driver. These two communicate via a isochronous transfer descriptor list(iTD) and an infinite loop unfolds if there is a closed loop in this list. A privileges user inside guest could use this flaw to consume excessive CPU cycles & resources on the host. Upstream fix: ------------- -> https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg02124.html This issue was discovered by Qinghao Tang of QIHU 360 Marvel Team. @maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.