CVE-2023-40548

A buffer overflow was found in Shim in the 32-bit system. The overflow
happens due to an addition operation involving a user-controlled value
parsed from the PE binary being used by Shim. This value is further used
for memory allocation operations, leading to a heap-based buffer overflow.
This flaw causes memory corruption and can lead to a crash or data
integrity issues during the boot phase.

Bugs

• <https://bugs.launchpad.net/ubuntu/+source/shim/+bug/2051151&gt;

Notes