There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables
At a glance
Severity
MEDIUM 6.5
EPSS
EPSS 0.33 % · percentile 26 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
canonical
NVD status
Modified
Description
There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.
