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Non-progress DoS in SHIFT_JISX0213 -&gt; UCS-4 conversion state  <br/>
handling (`iconvdata/shift_jisx0213.c`): crafted input can cause repeated  <br/>
emission of a buffered code point without further input consumption,  <br/>
leading to persistent retry churn and denial of service in callers  <br/>
converting untrusted text.<br/>
Requirements to exploit: An attacker must be able to supply text that an  <br/>
application converts from `SHIFT_JISX0213` to `UCS-4`, trigger a 2-byte  <br/>
sequence that expands through `__jisx0213_to_ucs_combining`, and have the  <br/>
caller retry after `E2BIG` with the same conversion state once only enough  <br/>
output space remains for the first of the two emitted code points.  <br/>
Applications that never use this conversion path, or that abort on repeated  <br/>
no-progress `E2BIG`, are not practically exposed.<br/>