From f168c10b52325b00da6355989a18a11743b33f89 Mon Sep 17 00:00:00 2001 From: Comtea04 Date: Sun, 27 Sep 2026 15:06:22 +0900 Subject: bytearray: Handle realloc() failure in byte_array_grow() byte_array_grow() assigned the result of realloc() directly to ba->data and increased the capacity even if realloc() failed, so the following memcpy() in byte_array_append() wrote to NULL + len. On failure, free the old buffer and leave the byte array in a failed state (data == NULL), which byte_array_append() already ignores. The callers check for that state: - the writers (bin, xml, json, openstep and the text output formats) return PLIST_ERR_NO_MEM instead of handing out a NULL/truncated buffer - node_to_xml() base64-encodes directly into the grown buffer, so it must bail out there (only guarded by assert() before) - the OpenStep parser returns PLIST_ERR_NO_MEM for instead of silently returning truncated data Co-Authored-By: Claude Opus 5.5 --- src/out-default.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/out-default.c') diff --git a/src/out-default.c b/src/out-default.c index 13b9d9c..845be3c 100644 --- a/src/out-default.c +++ b/src/out-default.c @@ -454,6 +454,13 @@ plist_err_t plist_write_to_string_default(plist_t plist, char **output, uint32_t } str_buf_append(outbuf, "\0", 1); + if (!outbuf->data) { + str_buf_free(outbuf); + *output = NULL; + *length = 0; + return PLIST_ERR_NO_MEM; + } + *output = (char*)outbuf->data; *length = outbuf->len - 1; -- cgit v1.1-32-gdbae