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Re: CVE request Qemu: ide: ahci null pointer dereference when using FIS CLB engines
From: cve-assign () mitre org
Date: Fri, 29 Jan 2016 20:13:23 -0500 (EST)
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Qemu emulator built with an IDE AHCI emulation support is vulnerable to a null pointer dereference flaw. It occurs while unmapping the Frame Information Structure(FIS) & Command List Block(CLB) entries. A privileged user inside guest could use this flaw to crash the Qemu process instance resulting in DoS. https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05742.html https://bugzilla.redhat.com/show_bug.cgi?id=1302057
ide: ahci: add check before calling dma_memo
address_space_map() returns NULL because 'bounce.buffer' is in use
Use CVE-2016-2197. This is not yet available at http://git.qemu.org/?p=qemu.git;a=history;f=hw/ide/ahci.c but that may be an expected place for a later update. - -- CVE assignment team, MITRE CVE Numbering Authority M/S M300 202 Burlington Road, Bedford, MA 01730 USA [ PGP key available through http://cve.mitre.org/cve/request_id.html ] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJWrAyZAAoJEL54rhJi8gl54p0QAK4MPiZJk06Dm60yZcoDkz2k AOnEE+vnHrYgD0pv3gNrtN5r7m3Aqo0FnDv9O+MlRy35ZouAnp5M5FcMhLCSnxyi 5py9FNW0VMOSz45y7oXFv50SOtbHO63uRf5ZUGc1Sbb2gWFVZuYdZMy1MByZ38lO BEwBmrhDHHa7v1VEwA0avC+ur4H8IZeVv0o16IdgrkbJ3HMOq+mdH8wZVhiiQykK sR7K4u/iGk3ZV1Jn9Cf9YGtxArFQCYeN58kNQ9SyH5oe2ZnoGnub3ovB7V00ReiU E+cbPRTwByJyIE/5kOhDHUOV32CnRmkNwWW0g4ZiaROtsQY95gC6+VzASzrAahsY igG+FuW2YV98opbtqegVixPHeYN5SJu/DIQKJEolPqpNeGs8tNYrhmtShgm95ZJc K4LrPuNwmg4ZNCFuAGQB6bKzvddh9zutj9Eui5xeuzWd9cXWCJV8F2RHAVtYZZKM T2WedId8Bu5OstqMCPRQjFMnlMPiajqSdrot0hUAtLds1/EI+iWu0mXaq1fmTxY4 qOtz7GzFWx5xQ+ZRlZj6W3J9dsN74w6xG94vle/bWYLxp646oYBfyMk2nBI4hW3m XjoUe09njgFRNFDzFJK9uj//qirsPRN2c14RamCN8y65bFKQ4rpopjW26VQwBNJJ IpC8cX/RD1LvEnWkxF8L =Huqy -----END PGP SIGNATURE-----
Current thread:
- CVE request Qemu: ide: ahci null pointer dereference when using FIS CLB engines P J P (Jan 28)
- Re: CVE request Qemu: ide: ahci null pointer dereference when using FIS CLB engines cve-assign (Jan 29)