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malloc-fail: Fix null deref in xmlBufResize

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Found with libFuzzer, see #344.
This commit is contained in:
Nick Wellnhofer
2023-01-22 13:20:15 +01:00
parent b3b53dcce4
commit 1aabc9db40
1 changed files with 2 additions and 1 deletions
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3
buf.c
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@@ -735,7 +735,8 @@ xmlBufResize(xmlBufPtr buf, size_t size)
if (buf->content == NULL) {
rebuf = (xmlChar *) xmlMallocAtomic(newSize);
buf->use = 0;
rebuf[buf->use] = 0;
if (rebuf != NULL)
rebuf[buf->use] = 0;
} else if (buf->size - buf->use < 100) {
rebuf = (xmlChar *) xmlRealloc(buf->content, newSize);
} else {