Fix potential buffer underflow and inefficient copy using fnmatch.#261
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robert-ancell wants to merge 1 commit into
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Fix potential buffer underflow and inefficient copy using fnmatch.#261robert-ancell wants to merge 1 commit into
robert-ancell wants to merge 1 commit into
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hughsie
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Aug 29, 2018
hughsie
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Aug 29, 2018
| if (text_sz != -1 && text[text_sz-1] != '\0') { | ||
| if (text_sz == 0) | ||
| return FNM_NOMATCH; | ||
| if (text[text_sz-1] != '\0') { |
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Why not just?
if (text_sz != 0 && text[text_sz-1] != '\0') {
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Because a zero length buffer might not be nul terminated.
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CI seems to be failing -- can you check than out pls? |
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If length was zero we could check the -1 index. A nul was always added because we only used the length of the string, not the buffer (i.e. off by one). Also remove a check for a negative number from an unsigned number.
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If length was zero we could check the -1 index.
A nul was always added because we only used the length of the string, not the
buffer (i.e. off by one).
Also remove a check for a negative number from an unsigned number.