split: allocate space for NUL terminator in CSV mode#266
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millert wants to merge 1 commit into
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Found by Frank Denis
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If the string to be split doesn't contain a comma, the entire string will be written to the buffer, including the NUL terminator. Because the size allocated does not take the NUL terminator into account, it will write the NUL one byte past the end of the buffer.
Found by Frank Denis using the Swival Security Scanner
https://github.com/Swival/security-audits/blob/015508ed21b8c5fabfd699ddbad6f82bf60780ed/openbsd-bin/audit-findings/071-csv-split-allocates-one-byte-too-few.md