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authorDan Rosenberg <drosenberg@vsecurity.com>2010-09-15 19:08:24 -0400
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2010-09-15 23:43:53 +0000
commitb4aaa78f4c2f9cde2f335b14f4ca30b01f9651ca (patch)
treedb374bec1bf1ee1530b31d40ee4d6ff59819ca89 /arch
parentf27098379b1dbfedae99e5b86e10529f799d4071 (diff)
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drivers/video/via/ioctl.c: prevent reading uninitialized stack memory
The VIAFB_GET_INFO device ioctl allows unprivileged users to read 246 bytes of uninitialized stack memory, because the "reserved" member of the viafb_ioctl_info struct declared on the stack is not altered or zeroed before being copied back to the user. This patch takes care of it. Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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