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authorDave Kleikamp <shaggy@linux.vnet.ibm.com>2010-08-10 00:57:38 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-11 02:33:09 +0400
commitaca0fa34bdaba39bfddddba8ca70dba4782e8fe6 (patch)
tree201b3f01b7fa6f63faaf7bcb592fcd90f1fdb739 /Documentation/lockstat.txt
parent2f9e825d3e0e2b407ae8f082de5c00afcf7378fb (diff)
downloadlinux-aca0fa34bdaba39bfddddba8ca70dba4782e8fe6.tar.xz
jfs: don't allow os2 xattr namespace overlap with others
It's currently possible to bypass xattr namespace access rules by prefixing valid xattr names with "os2.", since the os2 namespace stores extended attributes in a legacy format with no prefix. This patch adds checking to deny access to any valid namespace prefix following "os2.". Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Reported-by: Sergey Vlasov <vsu@altlinux.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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