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[Detail]
A malicious userspace application can corrupt kernel memory.
the offset is not limited, so it will becomes a powerful arbitrary
memory read/write primitive.
[Solution]
set the limit of the offset from 0 to 0xFFFF
MTK-Commit-Id: 91446a30b6123dd3391074062dc9833d09dbcc54
Change-Id: Icf733233133bd8ed734ec69a3567e06281d982ff
Signed-off-by: Edison Liu <Edison.Liu@mediatek.com>
CR-Id: ALPS03684210
Feature: Others
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This was entirely automated, using the script by Al:
PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
$(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)
to do the replacement at the end of the merge window.
Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Moyster <oysterized@gmail.com>
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They are not used anywhere and are creating a higher security risk
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result of :
git grep -l '__FUNCTION__' | xargs sed -i 's/__FUNCTION__/__func__/g'
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[Detail] Stack overflow & Null Pointer
[Solution] 1.Limited the param 'count' for 'copy_from_user'
2.Check Pointer
Change-Id: I81a91a64494b5f088c131f2d1ebc11fcf4b21939
Signed-off-by: Huan Tang <huan.tang@mediatek.com>
CR-Id: ALPS03361487
Feature: Others
Backported to 3.10 and a few code style ocds
Signed-off-by: Mister Oyster <oysterized@gmail.com>
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