CVE-2017-9763

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

The grub_ext2_read_block function in fs/ext2.c in GNU GRUB before 2013-11-12, as used in shlr/grub/fs/ext2.c in radare2 1.5.0, allows remote attackers to cause a denial of service (excessive stack use and application crash) via a crafted binary file, related to use of a variable-size stack array.

This update for grub2 fixes the following issues:

Security issue fixed:

• CVE-2017-9763: Fixed a memory leak in grub_ext2_read_block (bsc#1045063)

Other issues addressed:

• Added support for tftp block counter roll-over and backported support for efinetSNP open (bsc#1124662).

This update for grub2 fixes the following issues:

grub2 now implements the new 'SBAT' method for SHIM based secure boot revocation. (bsc#1182057)

grub2 was updated to the 2.02 version (same as SUSE Linux Enterprise 12 SP3).

Following security issues are fixed that can violate secure boot constraints:

• CVE-2020-25632: Fixed a use-after-free in rmmod command (bsc#1176711)
• CVE-2020-25647: Fixed an out-of-bound write in grub_usb_device_initialize() (bsc#1177883)
• CVE-2020-27749: Fixed a stack buffer overflow in grub_parser_split_cmdline (bsc#1179264)
• CVE-2020-27779, CVE-2020-14372: Disallow cutmem and acpi commands in secure boot mode (bsc#1179265 bsc#1175970)
• CVE-2021-20225: Fixed a heap out-of-bounds write in short form option parser (bsc#1182262)
• CVE-2021-20233: Fixed a heap out-of-bound write due to mis-calculation of space required for quoting (bsc#1182263)