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grub2: use-after-free in grub_cmd_chainloader()

🗓️ 16 Jun 2022 15:49:41Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 4 Views

Grub2 has a use after free flaw in grub_cmd_chainloader enabling access to restricted data or code execution.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
Tenable Nessus		Amazon Linux 2022 : grub2-common, grub2-efi-aa64, grub2-efi-aa64-cdboot (ALAS2022-2022-109)
7 Sep 202200:00
–nessus
Tenable Nessus		Amazon Linux 2023 : grub2-common, grub2-efi-aa64, grub2-efi-aa64-cdboot (ALAS2023-2023-020)
21 Mar 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : grub2 (ALAS-2023-2146)
20 Jul 202300:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0134: grub2, mokutil, shim, and shim-unsigned-x64 (ALINUX3-SA-2022:0134)
14 May 202500:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0164: grub2, mokutil, shim, and shim-unsigned-x64 (ALINUX3-SA-2022:0164)
14 May 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : grub2, mokutil, shim, and shim-unsigned-x64 (ALSA-2022:5099)
16 Nov 202200:00
–nessus
Tenable Nessus		EulerOS 2.0 SP8 : grub2 (EulerOS-SA-2022-2221)
17 Aug 202200:00
–nessus
Tenable Nessus		EulerOS 2.0 SP10 : grub2 (EulerOS-SA-2022-2242)
17 Aug 202200:00
–nessus
Tenable Nessus		EulerOS 2.0 SP10 : grub2 (EulerOS-SA-2022-2255)
17 Aug 202200:00
–nessus
Tenable Nessus		EulerOS 2.0 SP9 : grub2 (EulerOS-SA-2022-2289)
14 Sep 202200:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.2anygrub2-common1:2.02-87.el8_2.10.noarchgrub2-common-1:2.02-87.el8_2.10.noarch.noarch.rpm
Red Hat Enterprise Linux8.2aarch64grub2-debuginfo1:2.02-87.el8_2.10grub2-debuginfo-1:2.02-87.el8_2.10.aarch64.rpm
Red Hat Enterprise Linux8.2ppc64legrub2-debuginfo1:2.02-87.el8_2.10grub2-debuginfo-1:2.02-87.el8_2.10.ppc64le.rpm
Red Hat Enterprise Linux8.2x86_64grub2-debuginfo1:2.02-87.el8_2.10grub2-debuginfo-1:2.02-87.el8_2.10.x86_64.rpm
Red Hat Enterprise Linux8.2aarch64grub2-debugsource1:2.02-87.el8_2.10grub2-debugsource-1:2.02-87.el8_2.10.aarch64.rpm
Red Hat Enterprise Linux8.2ppc64legrub2-debugsource1:2.02-87.el8_2.10grub2-debugsource-1:2.02-87.el8_2.10.ppc64le.rpm
Red Hat Enterprise Linux8.2x86_64grub2-debugsource1:2.02-87.el8_2.10grub2-debugsource-1:2.02-87.el8_2.10.x86_64.rpm
Red Hat Enterprise Linux8.2aarch64grub2-efi-aa641:2.02-87.el8_2.10grub2-efi-aa64-1:2.02-87.el8_2.10.aarch64.rpm
Red Hat Enterprise Linux8.2aarch64grub2-efi-aa64-cdboot1:2.02-87.el8_2.10grub2-efi-aa64-cdboot-1:2.02-87.el8_2.10.aarch64.rpm
Red Hat Enterprise Linux8.2anygrub2-efi-aa64-modules1:2.02-87.el8_2.10.noarchgrub2-efi-aa64-modules-1:2.02-87.el8_2.10.noarch.noarch.rpm
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26 Jun 2026 15:35Current
7.8High risk
Vulners AI Score7.8
CVSS 3.16.4 - 7.8
EPSS0.00289
SSVC
CWE-416
grub2use after freegrub cmd chainloadermemory allocationrestricted data accessarbitrary code execution
4