[Bug tools/27501] eu-readelf hang while process crafted file

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27501

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |mark at klomp dot org

--- Comment #1 from Mark Wielaard <mark at klomp dot org> ---
Yeah, that is some real garbled data. We should sanity check the offsets to
make sure we don't loop "forever"

https://sourceware.org/pipermail/elfutils-devel/2021q1/003607.html

commit 480b6fa3662ba8ffeee274bf0d37423413c01e55
Author: Mark Wielaard <mark@klomp.org>
Date:   Wed Mar 3 21:40:53 2021 +0100

    readelf: Sanity check verneed and verdef offsets in handle_symtab.

    We are going through vna_next, vn_next and vd_next in a while loop.
    Make sure that all offsets are sane. We don't want things to wrap
    around so we go in cycles.

    https://sourceware.org/bugzilla/show_bug.cgi?id=27501

    Signed-off-by: Mark Wielaard <mark@klomp.org>

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