forked from rpms/glibc
28 lines
842 B
Diff
28 lines
842 B
Diff
commit 5177d85b0c050a2333a0c4165c938dd422013d05
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Thu Jan 16 06:45:36 2020 -0800
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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.
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Tested on Fedora 31/x86-64 with CET.
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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diff --git a/elf/dl-close.c b/elf/dl-close.c
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index fa7f3e8174576e46..a9ecdff62dba88fb 100644
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--- a/elf/dl-close.c
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+++ b/elf/dl-close.c
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@@ -749,6 +749,10 @@ _dl_close_worker (struct link_map *map, bool force)
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if (imap->l_runpath_dirs.dirs != (void *) -1)
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free (imap->l_runpath_dirs.dirs);
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+ /* Clear GL(dl_initfirst) when freeing its link_map memory. */
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+ if (imap == GL(dl_initfirst))
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+ GL(dl_initfirst) = NULL;
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+
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free (imap);
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}
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}
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