stable backports for arm64 shadow call stack pointer hardening patches

Please backport the following changes to stable kernels v5.10 and newer:

2198d07c509f1db4 arm64: Always load shadow stack pointer directly from
the task struct
59b37fe52f499557 arm64: Stash shadow stack pointer in the task struct
on interrupt

Thanks,
Ard.

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

On Tue, May 02, 2023 at 11:57:38AM +0200, Ard Biesheuvel wrote:

Please backport the following changes to stable kernels v5.10 and newer:

2198d07c509f1db4 arm64: Always load shadow stack pointer directly from
the task struct
59b37fe52f499557 arm64: Stash shadow stack pointer in the task struct
on interrupt

These did not apply to 5.10.y, but they applied to newer kernels.

thanks,

greg k-h

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

On Sat, 6 May 2023 at 07:51, Greg KH [off-list ref] wrote:

On Tue, May 02, 2023 at 11:57:38AM +0200, Ard Biesheuvel wrote:

quoted

Please backport the following changes to stable kernels v5.10 and newer:

2198d07c509f1db4 arm64: Always load shadow stack pointer directly from
the task struct
59b37fe52f499557 arm64: Stash shadow stack pointer in the task struct
on interrupt

These did not apply to 5.10.y, but they applied to newer kernels.

Thanks - I will send a v5.10 backport separately.

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel