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grub2: Use-after-free redefining a function whilst the same function is already executing

🗓️ 29 Jul 2020 20:16:34Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

GRUB2 race use-after-free in grub_script_function_create enables redefining a running function.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.0ppc64lefwupd1.1.4-2.el8_0fwupd-1.1.4-2.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64fwupd1.1.4-2.el8_0fwupd-1.1.4-2.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0ppc64lefwupd-debuginfo1.1.4-2.el8_0fwupd-debuginfo-1.1.4-2.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64fwupd-debuginfo1.1.4-2.el8_0fwupd-debuginfo-1.1.4-2.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0ppc64lefwupd-debugsource1.1.4-2.el8_0fwupd-debugsource-1.1.4-2.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64fwupd-debugsource1.1.4-2.el8_0fwupd-debugsource-1.1.4-2.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0noarchgrub2-common1:2.02-87.el8_0grub2-common-1:2.02-87.el8_0.noarch.rpm
Red Hat Enterprise Linux8.0ppc64legrub2-debuginfo1:2.02-87.el8_0grub2-debuginfo-1:2.02-87.el8_0.ppc64le.rpm
Red Hat Enterprise Linux8.0x86_64grub2-debuginfo1:2.02-87.el8_0grub2-debuginfo-1:2.02-87.el8_0.x86_64.rpm
Red Hat Enterprise Linux8.0ppc64legrub2-debugsource1:2.02-87.el8_0grub2-debugsource-1:2.02-87.el8_0.ppc64le.rpm
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28 Jun 2026 08:57Current
7.7High risk
Vulners AI Score7.7
CVSS 24.4
CVSS 3.16.4
EPSS0.00977
5