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List: openbsd-security-announce
Subject: OpenBSD patch: XMM exceptions incorrectly handled in i386 kernel
From: Joel Sing <jsing () openbsd ! org>
Date: 2009-10-05 11:21:27
Message-ID: 200910051121.n95BLRab027555 () cvs ! openbsd ! org
[Download RAW message or body]
XMM exceptions are incorrectly handled in the OpenBSD/i386 kernel, resulting
in a kernel panic that can be triggered by a local user.
This issue has been fixed in -current. Source code patches are available for
OpenBSD 4.4, 4.5 and 4.6.
Patch for OpenBSD 4.6:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.6/i386/002_xmm.patch
Patch for OpenBSD 4.5:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.5/i386/008_xmm.patch
Patch for OpenBSD 4.4:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.4/i386/015_xmm.patch
These patches are also available in the OPENBSD_4_6, OPENBSD_4_5 and
OPENBSD_4_4 patch branches.
Thanks to Slava Pestov for reporting this issue.
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