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H A D | file.c | 128b8546 Tue Feb 13 14:54:30 CST 2007 Masato Noguchi <Masato.Noguchi@jp.sony.com> [POWERPC] spufs: avoid accessing kernel memory through mmapped /mem node
I found an exploit in current kernel. Currently, there is no range check about mmapping "/mem" node in spufs. Thus, an application can access privilege memory region.
In case this kernel already worked on a public server, I send this information only here. If there are such servers in somewhere, please replace it, ASAP.
Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> 128b8546 Tue Feb 13 14:54:30 CST 2007 Masato Noguchi <Masato.Noguchi@jp.sony.com> [POWERPC] spufs: avoid accessing kernel memory through mmapped /mem node I found an exploit in current kernel. Currently, there is no range check about mmapping "/mem" node in spufs. Thus, an application can access privilege memory region. In case this kernel already worked on a public server, I send this information only here. If there are such servers in somewhere, please replace it, ASAP. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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