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sbat: append NUL byte to .sbat section #412

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sbat: append NUL byte to .sbat section #412

wants to merge 1 commit into from

Commits on Sep 6, 2021

  1. sbat: append NUL byte to .sbat section 

    When the UEFI firmware loads the .sbat section into memory it only
intializes VirtSize bytes. Directly behind the .sbat section will be
unintialized memory with unknown content.

Shim's image file header is not available at runtime. Up to now the
.sbat section ended with LF. So it was not possible to determine the
end of the .bat section in memory.

By appending a NUL byte to the .sbat section we get a well defined
file end.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
    @xypron
    xypron committed Sep 6, 2021
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