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shim: Interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems

🗓️ 18 Apr 2024 17:44:10Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

Shim 32-bit overflow causes heap overflow in verify_sbat_section via user input.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8aarch64shim-aa640:15.8-4.el8_9shim-aa64-0:15.8-4.el8_9.aarch64.rpm
Red Hat Enterprise Linux8x86_64shim-ia320:15.8-4.el8_9shim-ia32-0:15.8-4.el8_9.x86_64.rpm
Red Hat Enterprise Linux8x86_64shim-x640:15.8-4.el8_9shim-x64-0:15.8-4.el8_9.x86_64.rpm

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26 Jun 2026 10:29Current
7High risk
Vulners AI Score7
CVSS 3.17.4
EPSS0.00432
SSVC
5