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grub2: Stack buffer overflow in grub_parser_split_cmdline()

🗓️ 02 Mar 2021 19:28:47Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Grub stack overflow in grub_parser_split_cmdline due to large variable expansion risking Secure Boot.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.2noarchgrub2-common1:2.02-87.el8_2.3grub2-common-1:2.02-87.el8_2.3.noarch.rpm
Red Hat Enterprise Linux8.2aarch64grub2-debuginfo1:2.02-87.el8_2.3grub2-debuginfo-1:2.02-87.el8_2.3.aarch64.rpm
Red Hat Enterprise Linux8.2ppc64legrub2-debuginfo1:2.02-87.el8_2.3grub2-debuginfo-1:2.02-87.el8_2.3.ppc64le.rpm
Red Hat Enterprise Linux8.2x86_64grub2-debuginfo1:2.02-87.el8_2.3grub2-debuginfo-1:2.02-87.el8_2.3.x86_64.rpm
Red Hat Enterprise Linux8.2aarch64grub2-debugsource1:2.02-87.el8_2.3grub2-debugsource-1:2.02-87.el8_2.3.aarch64.rpm
Red Hat Enterprise Linux8.2ppc64legrub2-debugsource1:2.02-87.el8_2.3grub2-debugsource-1:2.02-87.el8_2.3.ppc64le.rpm
Red Hat Enterprise Linux8.2x86_64grub2-debugsource1:2.02-87.el8_2.3grub2-debugsource-1:2.02-87.el8_2.3.x86_64.rpm
Red Hat Enterprise Linux8.2aarch64grub2-efi-aa641:2.02-87.el8_2.3grub2-efi-aa64-1:2.02-87.el8_2.3.aarch64.rpm
Red Hat Enterprise Linux8.2aarch64grub2-efi-aa64-cdboot1:2.02-87.el8_2.3grub2-efi-aa64-cdboot-1:2.02-87.el8_2.3.aarch64.rpm
Red Hat Enterprise Linux8.2noarchgrub2-efi-aa64-modules1:2.02-87.el8_2.3grub2-efi-aa64-modules-1:2.02-87.el8_2.3.noarch.rpm
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26 Jun 2026 22:26Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.16.7
CVSS 27.2
EPSS0.00573
3