[Bug binutils/21990] Integer overflow in process_version_sections (readelf.c)

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=21990

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=452bf675ea772002aa86fb1d28f3474da70ee1de

commit 452bf675ea772002aa86fb1d28f3474da70ee1de
Author: Alan Modra <address@hidden>
Date:   Wed Aug 23 15:42:12 2017 +0930

    PR21990, Integer overflow in process_version_sections

    This tidies some of the overflow checking when processing verneed
    and verdef sections.

        PR 21990
        * readelf.c (process_version_sections <SHT_GNU_verneed>): Check
        for invalid vn_next field before adding to idx.  Use unsigned
        long for index vars.  Move index checks.
        <SHT_GNU_verdef>: Likewise for vd_next.

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