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From: Alan Modra <amodra@sourceware.org> To: bfd-cvs@sourceware.org, gdb-cvs@sourceware.org Subject: [binutils-gdb] libctf: avoid potential double free Date: Thu, 8 Dec 2022 01:23:24 +0000 (GMT) [thread overview] Message-ID: <20221208012324.C6C9F381EC92@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=57336e2e4d05eaac6367400e6ce3aed24f838f2c commit 57336e2e4d05eaac6367400e6ce3aed24f838f2c Author: Alan Modra <amodra@gmail.com> Date: Thu Dec 8 11:45:12 2022 +1030 libctf: avoid potential double free * ctf-link.c (ctf_link_add_cu_mapping): Set t NULL after free. Diff: --- libctf/ctf-link.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libctf/ctf-link.c b/libctf/ctf-link.c index 702f2b4d5fe..902b4408cd6 100644 --- a/libctf/ctf-link.c +++ b/libctf/ctf-link.c @@ -431,7 +431,10 @@ ctf_link_add_cu_mapping (ctf_dict_t *fp, const char *from, const char *to) } } else - free (t); + { + free (t); + t = NULL; + } if (ctf_dynhash_insert (one_out, f, NULL) < 0) {
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