URL:
<http://savannah.gnu.org/bugs/?42134>
Summary: loadenv.c – check_blocklists – algorithm for
block overlap check is wrong
Project: GNU GRUB
Submitted by: roman_pekhov
Submitted on: Чтв 17 Апр 2014 14:17:55
Category: Configuration
Severity: Major
Priority: 5 - Normal
Item Group: Software Error
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release:
Release: Git master
Reproducibility: Every Time
Planned Release: None
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Details:
The check_blocklists function surely writes "malformed file" error if the
block list contains more than one blocks.
The well-known overlap check algorithm is:
if (s1 < e2 && s2 < e1)
{
return grub_error (GRUB_ERR_BAD_FS, "malformed file");
}
Swap (s1 <-> s2, e1 <-> e2) is not needed in this case.
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