jerpelea opened a new pull request, #20250: URL: https://github.com/apache/nuttx/pull/20250
## Summary POSIX requires getdelim()/getline() to allocate a new buffer whenever *lineptr is NULL, regardless of the value of *n. The previous code read the buffer size from *n unconditionally and only fell back to the initial size when *n was zero, so a caller that passes *lineptr == NULL together with an uninitialized (non-zero) *n caused lib_malloc() to be invoked with that garbage size and typically fail with ENOMEM. Treat a NULL *lineptr the same as a zero *n: (re)allocate from the known BUFSIZE_INIT and ignore the untrusted *n. This matches the glibc behaviour that portable code relies on (for example toybox grep, which calls getdelim() with an uninitialized size variable). ## Impact RELEASE ## Testing CI -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
