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[Bug dynamic-link/20105] bad version variable in elf_dynamic_do_Rel() elf/do-rel.h (2.23) causes coredump in dl-machine.h elf_machine_rela()


https://sourceware.org/bugzilla/show_bug.cgi?id=20105

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |carlos at redhat dot com

--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Jason Vas Dias from comment #0)
> So the expression &map->l_versions[ndx] has value 0x48 but is dereferenced
> as a pointer by elf_machine_rela() .

Something serious has gone wrong.

In elf_get_dynamic_info the value of DT_VERSYM is loaded and relocated and
should never be invalid for a correct binary and in a correct use case.

Is your binary is corrupt?

Was the file was written do while you were running?

Can you provide a copy of the library that fails to load?

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