A shim security update has been released for AlmaLinux.
ALSA-2021:1734 Moderate: shim security update
Type:
security
Severity:
moderate
Release date:
2021-05-18
Description
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.
References:
CVE-2020-14372
CVE-2020-25632
CVE-2020-25647
CVE-2020-27749
CVE-2020-27779
CVE-2021-20225
CVE-2021-20233
Updates packages:
shim-ia32-15.4-2.el8_1.alma.x86_64.rpm
shim-unsigned-x64-15.4-4.el8_1.alma.x86_64.rpm
shim-x64-15.4-2.el8_1.alma.x86_64.rpm
Notes:
This page is generated automatically and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.
