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Change History

In the Linux kernel, the following vulnerability has been resolved:

powerpc/powernv/sriov: perform null check on iov before dereferencing iov

Currently pointer iov is being dereferenced before the null check of iov
which can lead to null pointer dereference errors. Fix this by moving the
iov null check before the dereferencing.

Detected using cppcheck static analysis:
linux/arch/powerpc/platforms/powernv/pci-sriov.c:597:12: warning: Either
the condition '!iov' is redundant or there is possible null pointer
dereference: iov. [nullPointerRedundantCheck]
 num_vfs = iov->num_vfs;
           ^

https://git.kernel.org/stable/c/07c19c0ad4b07f4b598da369714de028f6a6a323

https://git.kernel.org/stable/c/6314465b88072a6b6f3b3c12a7898abe09095f95

https://git.kernel.org/stable/c/72990144e17e5e2cb378f1d9b10530b85b9bc382

https://git.kernel.org/stable/c/d3a0d96c16e5f8d55e2c70163abda3c7c8328106

https://git.kernel.org/stable/c/d9a1aaea856002cb58dfb7c8d8770400fa1a0299

https://git.kernel.org/stable/c/f4f913c980bc6abe0ccfe88fe3909c125afe4a2d