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nis: Fix leak on realloc failure in nis_getnames [BZ #28150]
If pos >= count but realloc fails, tmp will not have been placed in getnames[pos] yet, and so will not be freed in free_null. Detected by Coverity. Also remove misleading comment from nis_getnames(), since it actually did properly release getnames when out of memory. Tested-by: Carlos O'Donell <carlos@redhat.com>
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@ -103,9 +103,6 @@ count_dots (const_nis_name str)
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return count;
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}
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/* If we run out of memory, we don't give already allocated memory
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free. The overhead for bringing getnames back in a safe state to
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free it is to big. */
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nis_name *
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nis_getnames (const_nis_name name)
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{
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@ -271,7 +268,10 @@ nis_getnames (const_nis_name name)
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nis_name *newp = realloc (getnames,
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(count + 1) * sizeof (char *));
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if (__glibc_unlikely (newp == NULL))
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goto free_null;
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{
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free (tmp);
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goto free_null;
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}
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getnames = newp;
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}
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getnames[pos] = tmp;
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