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H A D | xattr.c | aca0fa34 Mon Aug 09 15:57:38 CDT 2010 Dave Kleikamp <shaggy@linux.vnet.ibm.com> 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> aca0fa34 Mon Aug 09 15:57:38 CDT 2010 Dave Kleikamp <shaggy@linux.vnet.ibm.com> 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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