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| author | Florian Weimer <fweimer@redhat.com> | 2021-04-21 19:49:51 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2021-04-21 19:49:51 +0200 |
| commit | fada9018199c21c469ff0e731ef75c6020074ac9 (patch) | |
| tree | 92a5914178f7acac985fd4ce15d4e7ee99522e9d /elf/rtld.c | |
| parent | b2964eb1d9a6b8ab1250e8a881cf406182da5875 (diff) | |
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dlfcn: dlerror needs to call free from the base namespace [BZ #24773]
Calling free directly may end up freeing a pointer allocated by the
dynamic loader using malloc from libc.so in the base namespace using
the allocator from libc.so in a secondary namespace, which results in
crashes.
This commit redirects the free call through GLRO and the dynamic
linker, to reach the correct namespace. It also cleans up the dlerror
handling along the way, so that pthread_setspecific is no longer
needed (which avoids triggering bug 24774).
Diffstat (limited to 'elf/rtld.c')
| -rw-r--r-- | elf/rtld.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/elf/rtld.c b/elf/rtld.c index fd02438936..c2ca4b7ce3 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -369,6 +369,7 @@ struct rtld_global_ro _rtld_global_ro attribute_relro = ._dl_open = _dl_open, ._dl_close = _dl_close, ._dl_catch_error = _rtld_catch_error, + ._dl_error_free = _dl_error_free, ._dl_tls_get_addr_soft = _dl_tls_get_addr_soft, #ifdef HAVE_DL_DISCOVER_OSVERSION ._dl_discover_osversion = _dl_discover_osversion |