[PATCH natty] UBUNTU: [Config] packaging: adjust perms on vmlinuz as well

[Tim Gardner]

On 03/23/2011 02:17 PM, Kees Cook wrote:
> Since kernel symbols are resolvable internally to the kernel, the kernel
> itself has a map of the symbols. Continuing the tradition of frustrating
> off-the-shelf kernel exploits, make vmlinuz unreadable for non-root, just
> like has been done for System.map, etc.
>
> Signed-off-by: Kees Cook<kees.cook at canonical.com>
> ---
>   debian/rules.d/2-binary-arch.mk |    4 ++--
>   debian/scripts/sub-flavour      |    4 ++--
>   2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/debian/rules.d/2-binary-arch.mk b/debian/rules.d/2-binary-arch.mk
> index c31ab14..9765ef7 100644
> --- a/debian/rules.d/2-binary-arch.mk
> +++ b/debian/rules.d/2-binary-arch.mk
> @@ -54,13 +54,13 @@ install-%: $(stampdir)/stamp-build-% checks-%
>   	# compress_file logic required because not all architectures
>   	# generate a zImage automatically out of the box
>   ifeq ($(compress_file),)
> -	install -m644 -D $(builddir)/build-$*/$(kernel_file) \
> +	install -m600 -D $(builddir)/build-$*/$(kernel_file) \
>   		$(pkgdir)/boot/$(install_file)-$(abi_release)-$*
>   else
>   	install -d $(pkgdir)/boot
>   	gzip -c9v $(builddir)/build-$*/$(kernel_file)>  \
>   		$(pkgdir)/boot/$(install_file)-$(abi_release)-$*
> -	chmod 644 $(pkgdir)/boot/$(install_file)-$(abi_release)-$*
> +	chmod 600 $(pkgdir)/boot/$(install_file)-$(abi_release)-$*
>   endif
>
>   	install -m644 $(builddir)/build-$*/.config \
> diff --git a/debian/scripts/sub-flavour b/debian/scripts/sub-flavour
> index 45456bb..0100493 100644
> --- a/debian/scripts/sub-flavour
> +++ b/debian/scripts/sub-flavour
> @@ -11,9 +11,9 @@ from_moddir="debian/$from_pkg/lib/modules/$ABI_RELEASE-$FROM"
>   to_moddir="debian/$to_pkg/lib/modules/$ABI_RELEASE-$FROM"
>
>   install -d "debian/$to_pkg/boot"
> -install -m644 debian/$from_pkg/boot/{vmlinuz,config}-$ABI_RELEASE-$FROM \
> +install -m644 debian/$from_pkg/boot/config-$ABI_RELEASE-$FROM \
>   	debian/$to_pkg/boot/
> -install -m600 debian/$from_pkg/boot/System.map-$ABI_RELEASE-$FROM \
> +install -m600 debian/$from_pkg/boot/{vmlinuz,System.map}-$ABI_RELEASE-$FROM \
>   	debian/$to_pkg/boot/
>
>   #

applied

-- 
Tim Gardner tim.gardner at canonical.com