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Fix a grub issue with incorrect values from an usb device. From the official description from NVD [1]: During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. This patch is a part of a bigger security collection for grub [2]. [1] https://nvd.nist.gov/vuln/detail/CVE-2020-25647 [2] https://lists.gnu.org/archive/html/grub-devel/2021-03/msg00007.html (From OE-Core rev: a339dee50be98931613e5525ccd2a623bcae7fd1) Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.