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CVE: CVE-2023-4692 Crafted file system images can cause heap-based buffer overflow and may allow arbitrary code execution and secure boot bypass. Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=43651027d24e62a7a463254165e1e46e42aecdea] CVE: CVE-2023-4693 There an out-of-bounds read at fs/ntfs.c, a physically present attacker may leverage that by presenting a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack may allow sensitive data cached in memory or EFI variables values to be leaked presenting a high Confidentiality risk. Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/grub.git/commit/?id=0ed2458cc4eff6d9a9199527e2a0b6d445802f94] (From OE-Core rev: 51236150a3740d95e3601499d3918af5a37f8f86) Signed-off-by: Xiangyu Chen <xiangyu.chen@windriver.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> (cherry picked from commit: a8bc6f041599ce8da275c163c87f155a2f09369c) Signed-off-by: Xiangyu Chen <xiangyu.chen@windriver.com> Signed-off-by: Steve Sakoman <steve@sakoman.com>