[ALSA-2021:1734] Moderate: shim security update
Release date:
The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments. Security Fix(es): * grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled (CVE-2020-14372) * grub2: Use-after-free in rmmod command (CVE-2020-25632) * grub2: Out-of-bounds write in grub_usb_device_initialize() (CVE-2020-25647) * grub2: Stack buffer overflow in grub_parser_split_cmdline() (CVE-2020-27749) * grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled (CVE-2020-27779) * grub2: Heap out-of-bounds write in short form option parser (CVE-2021-20225) * grub2: Heap out-of-bounds write due to miscalculation of space required for quoting (CVE-2021-20233) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
Updated packages listed below:
Architecture Package Checksum
aarch64 shim-aa64-15.4-2.el8_1.alma.aarch64.rpm 6cfb21a2513e1cf3faea077e09b42277bd84a53dd4221db8548af8ab6aa43764
aarch64 shim-unsigned-aarch64-15-7.el8_1.alma.aarch64.rpm c6c12853b775dd0f70ef7668c987157d301c3c667e50f65db887a26fd7a022e0
x86_64 shim-ia32-15.4-2.el8_1.alma.x86_64.rpm 2cde8b7d0f7100a7f8241144781048634fae1b249374049c071ac8af1e4692eb
x86_64 shim-unsigned-x64-15.4-4.el8_1.alma.x86_64.rpm 53edabf45d130e941b33f902afc225ec68b6b3d4a7d034e872d49b3dcbccd256
x86_64 shim-x64-15.4-2.el8_1.alma.x86_64.rpm 985ea8336abc099a339174466fbe3ec3248a04f9b89cbc58f5d48f0a8143d568
This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.