https://sourceware.org/bugzilla/show_bug.cgi?id=34401
Mark Wielaard <mark at klomp dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mark at klomp dot org
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Mark Wielaard <mark at klomp dot org> ---
Thanks for the report, analysis, reproducer and proposed fix.
Pushed as:
commit 681b793e420c3b1d45b921c190edfb2adfc45b97
Author: Mark Wielaard <[email protected]>
Date: Thu Jul 16 16:45:18 2026 +0200
libelf: Handle truncated symbol archive index
When checking the index_size of an / or /SYM64/ symbol archive index
in elf_getarsym we only checked that the index_size contained the
whole offset table, but failed to check there was also room for the
count. Fix this by first making sure to check the index_size is large
enough for the count (4 or 8 bytes), then check that the rest of the
index_size has room for count table offset entries.
https://sourceware.org/bugzilla/show_bug.cgi?id=34401
Reported-by: Karan Kurani <[email protected]>
Signed-off-by: Mark Wielaard <[email protected]>
P.S. When running against a clean elfutils git checkout as in your script you
should use --enable-maintainer-mode to generate some extra files.
Although the patch looks technically correct GNU patch didn't like it with only
minimal context.
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