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edk2: integer underflow in SmmEntryPoint function leads to potential SMM privilege escalation

🗓️ 09 May 2023 09:50:46Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 8 Views

edk2 SmmEntryPoint integer underflow allows local admin to write into SMM and execute code.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2noarchedk2-aarch6420221207gitfff6d81270b5-9.el9_2edk2-aarch64-20221207gitfff6d81270b5-9.el9_2.noarch.rpm
Red Hat Enterprise Linux9.2aarch64edk2-debugsource20221207gitfff6d81270b5-9.el9_2edk2-debugsource-20221207gitfff6d81270b5-9.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2x86_64edk2-debugsource20221207gitfff6d81270b5-9.el9_2edk2-debugsource-20221207gitfff6d81270b5-9.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2noarchedk2-ovmf20221207gitfff6d81270b5-9.el9_2edk2-ovmf-20221207gitfff6d81270b5-9.el9_2.noarch.rpm
Red Hat Enterprise Linux9.2aarch64edk2-tools20221207gitfff6d81270b5-9.el9_2edk2-tools-20221207gitfff6d81270b5-9.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2x86_64edk2-tools20221207gitfff6d81270b5-9.el9_2edk2-tools-20221207gitfff6d81270b5-9.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64edk2-tools-debuginfo20221207gitfff6d81270b5-9.el9_2edk2-tools-debuginfo-20221207gitfff6d81270b5-9.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2x86_64edk2-tools-debuginfo20221207gitfff6d81270b5-9.el9_2edk2-tools-debuginfo-20221207gitfff6d81270b5-9.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2noarchedk2-tools-doc20221207gitfff6d81270b5-9.el9_2edk2-tools-doc-20221207gitfff6d81270b5-9.el9_2.noarch.rpm

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04 Aug 2026 21:32Current
6.9Medium risk
Vulners AI Score6.9
CVSS 27.5
CVSS 3.17.4 - 9.8
EPSS0.01011
SSVC
8