]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
MIPS: Fix potential DOS by untrusted user app.
authorVlad Malov <Vlad.Malov@caviumnetworks.com>
Tue, 18 Nov 2008 23:05:46 +0000 (15:05 -0800)
committerRalf Baechle <ralf@linux-mips.org>
Thu, 4 Dec 2008 17:47:26 +0000 (17:47 +0000)
commite807f9574e37a3f202e677feaaad1b7c5d2c0db8
treea9b61e4d8f4e53a81df3bb14df0a4c2b037d8d81
parentfeaf3848a813a106f163013af6fcf6c4bfec92d9
MIPS: Fix potential DOS by untrusted user app.

On a 64 bit kernel if an o32 syscall was made with a syscall number less
than 4000, we would read the function from outside of the bounds of the
syscall table.  This led to non-deterministic behavior including system
crashes.

While we were at it we reworked the 32 bit version as well to use fewer
instructions.  Both 32 and 64 bit versions are use the same code now.

Signed-off-by: Vlad Malov <Vlad.Malov@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/kernel/scall32-o32.S
arch/mips/kernel/scall64-o32.S