[asterisk-bugs] [JIRA] (ASTERISK-23984) Infinite loop possible in ast_careful_fwrite()

[Steve Davies (JIRA)]

Steve Davies created ASTERISK-23984:
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             Summary: Infinite loop possible in ast_careful_fwrite()
                 Key: ASTERISK-23984
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23984
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Core/General
    Affects Versions: 11.10.2
            Reporter: Steve Davies


Towards the end of ast_careful_fwrite(), and attempt is made to flush the userspace buffers using fflush.

If fflush first returns EOF/EINTR, and then returns EOF/SUCCESS, errno is not reset on the second time around the loop, and is then never reset, causing an infinite 100% CPU loop.







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