oss-sec mailing list archives
Re: CVE Request: Qemu: scsi: mptsas infinite loop in mptsas_fetch_requests
From: cve-assign () mitre org
Date: Tue, 24 May 2016 09:45:54 -0400 (EDT)
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Quick Emulator(Qemu) built with the LSI SAS1068 Host Bus Adapter emulation support is vulnerable to an infinite loop issue. It could occur while fetching new requests in mptsas_fetch_requests(). A privileged user inside guest could use this flaw to consume excessive host resources or crash the Qemu process resulting in DoS. https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg04027.html
The LSI SAS1068 Host Bus Adapter emulator in Qemu, periodically looks for requests and fetches them. A loop doing that in mptsas_fetch_requests() could run infinitely if 's->state' was not operational. Move check to avoid such a loop.
Use CVE-2016-4964. This is not yet available at http://git.qemu.org/?p=qemu.git;a=history;f=hw/scsi/mptsas.c but that may be an expected place for a later update. - -- CVE Assignment Team M/S M300, 202 Burlington Road, Bedford, MA 01730 USA [ A PGP key is available for encrypted communications at http://cve.mitre.org/cve/request_id.html ] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJXRFoUAAoJEHb/MwWLVhi2eREP/RhdpWO2TWtok4uMWzOC5tUE w/MXH56dSTjvJUVVD7zD6LGNVaxXkjywiPNX49Pk4mibEKgXD1J1KnhsjpmroJes 3Lh1tU9ojMJYhSwQVTVvKakuo3zhDMm307nao8zLTyA1H44vAj0w8bYeqal3Q2+k n86IVtv3AsjQQEWkFcAZbQBKw78Vkbg2DtYoBzy7Wp/7S99CyMy4EFQiWUI/2dVj 1uJdes2eAPawoPHI/1fKK9aGg3ZMslA6sw+vtBC9iQkYd99whBf0OiKgauJC5c8L j0o7pedV+jwciDTAzFdTaM9yoVaoGhaH7QZY7NfBl3aWbZDaxJAZKicOWHFNXt0y ePswqrHNhglshL0OwiZTlPktaz1o1iJxSjYEOYc1eY0X9y3peTg8+3gao+EAWDng hbR2opWVdgjjy3Ob/tV1QSVASbZV+BSCavMUOcHf0ulQTHBRJOKXopGcY1Qmx8Ot DhgDZINAhSSgrlBLvgfXYMlRKVm9MTZqfpjwQTr8kdHOpQljrHB00SJSAzI5uvlx HdbTUonZvaTYSenkaK1D+L/8C+0hPZXrf7B1IyXh6QFILJAZ5+TYyzXxdajUoImg jl1wPo5DS0i/wFO4Obt7phpf7MM2rabo1WDzolWiGU+glmVIuXFmEVa43d2eTBxz ORKeSpt/xA4I3D98cYxe =fzoY -----END PGP SIGNATURE-----
Current thread:
- CVE Request: Qemu: scsi: mptsas infinite loop in mptsas_fetch_requests P J P (May 24)
- Re: CVE Request: Qemu: scsi: mptsas infinite loop in mptsas_fetch_requests cve-assign (May 24)