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[CVE-2024-34459] Fix buffer overread with xmllint --htmlout

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Add a missing bounds check.

Fixes #720.
This commit is contained in:
Nick Wellnhofer 2024-05-08 11:49:31 +02:00
parent c83147bff2
commit 3ad7f81624
1 changed files with 1 additions and 1 deletions
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2
xmllint.c
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@ -543,7 +543,7 @@ xmlHTMLPrintFileContext(xmlParserInputPtr input) {
len = strlen(buffer);
snprintf(&buffer[len], sizeof(buffer) - len, "\n");
cur = input->cur;
while ((*cur == '\n') || (*cur == '\r'))
while ((cur > base) && ((*cur == '\n') || (*cur == '\r')))
cur--;
n = 0;
while ((cur != base) && (n++ < 80)) {