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Clear GL(dl_initfirst) when freeing its link_map memory [BZ# 25396]

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We should clear GL(dl_initfirst) when freeing its link_map memory.

Tested on Fedora 31/x86-64 with CET.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
H.J. Lu 2020-01-16 06:45:36 -08:00
parent 791a08cf37
commit 5177d85b0c
1 changed files with 4 additions and 0 deletions
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4
elf/dl-close.c
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@ -756,6 +756,10 @@ _dl_close_worker (struct link_map *map, bool force)
if (imap->l_runpath_dirs.dirs != (void *) -1)
free (imap->l_runpath_dirs.dirs);
/* Clear GL(dl_initfirst) when freeing its link_map memory. */
if (imap == GL(dl_initfirst))
GL(dl_initfirst) = NULL;
free (imap);
}
}