CVS commit: [netbsd-7-1] src/sys/compat/linux32/arch/amd64

["Soren Jacobsen" <snj%netbsd.org@localhost>]

Module Name:    src
Committed By:   snj
Date:           Sat Sep  9 16:57:36 UTC 2017

Modified Files:
        src/sys/compat/linux32/arch/amd64 [netbsd-7-1]: linux32_machdep.c

Log Message:
Pull up following revision(s) (requested by maxv in ticket #1507):
        sys/compat/linux32/arch/amd64/linux32_machdep.c: revision 1.39
Fix a ring0 escalation vulnerability in compat_linux32 where the
index of %cs is controlled by userland, making it easy to trigger
the page fault and get kernel privileges.


To generate a diff of this commit:
cvs rdiff -u -r1.36 -r1.36.14.1 \
    src/sys/compat/linux32/arch/amd64/linux32_machdep.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.