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Fix a crash while parsing malformed CAA RRs in presentation format (#39003)

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(cherry picked from commit f9f81abff0)
This commit is contained in:
Mukund Sivaraman
2015-03-27 10:31:29 +05:30
parent 06ea857da1
commit ffc5d17ea8
3 changed files with 7 additions and 1 deletions
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2
lib/dns/rdata/generic/caa_257.c
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@@ -68,7 +68,7 @@ fromtext_caa(ARGS_FROMTEXT) {
ISC_FALSE));
tr = token.value.as_textregion;
for (i = 0; i < tr.length; i++)
if (!alphanumeric[(unsigned int) tr.base[i]])
if (!alphanumeric[(unsigned char) tr.base[i]])
RETTOK(DNS_R_SYNTAX);
RETERR(uint8_tobuffer(tr.length, target));
RETERR(mem_tobuffer(target, tr.base, tr.length));