bugThe FreeType Project - Bugs: bug #45964, src/pcf/pcfread.c:1291:44: runtime...

 
 

bug #45964: src/pcf/pcfread.c:1291:44: runtime error: signed integer overflow: 6764195537992704 * 7200 cannot be represented in type

Submitted by:  Kostya Serebryany <kcc>
Submitted on:  Mon 14 Sep 2015 09:15:09 PM UTC  
 
Severity:  3 - Normal Item Group:  None
Status:  Fixed Privacy:  Public
Assigned to:  Werner LEMBERG <wl> Open/Closed:  Closed
Planned Release:  2.6.1

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Tue 15 Sep 2015 05:10:48 AM UTC, comment #1:

Fixed in git, thanks.

Werner LEMBERG <wl>
Project AdministratorIn charge of this item.
Mon 14 Sep 2015 09:15:09 PM UTC, original submission:

found on fresh git with libFuzzer+UBsan (on x86_64 Linux)

Build with -fsanitize=signed-integer-overflow and feed the attached file into FT_New_Memory_Face

src/pcf/pcfread.c:1291:44: runtime error: signed integer overflow: 6764195537992704 * 7200 cannot be represented in type

The code is:
(FT_Pos)( ( prop->value.l * 64 * 7200 + 36135L ) / 72270L );

Apparently, prop->value.l could be rather large...

Kostya Serebryany <kcc>
Project Member

 

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Attached Files
file #34881:  487f97c16682291e13a381996eeb622cd2a3deec added by kcc (4KiB - application/octet-stream - j00ru)

 

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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2015-09-15 wl StatusNone => Fixed
        Assigned toNone => wl
        Open/ClosedOpen => Closed
        Planned ReleaseNone => 2.6.1
    2015-09-14 kcc Attached File- => Added 487f97c16682291e13a381996eeb622cd2a3deec, #34881

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