lwIP - A Lightweight TCP/IP stack - Bugs: bug #57433, use-after-free caused by...
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bug #57433: use-after-free caused by tcp_input_delayed_close
Submitter: | Gar User <ghessler> | ||
Submitted: | Tue 17 Dec 2019 02:12:23 PM UTC | ||
Category: | TCP | Severity: | 3 - Normal |
Item Group: | Crash Error | Status: | None |
Privacy: | Public | Assigned to: | None |
Open/Closed: | Open | Planned Release: | None |
lwIP version: | 2.1.0 |
Tue 17 Dec 2019 07:49:31 PM UTC, comment #1: |
Gar User <ghessler> |
Tue 17 Dec 2019 02:12:23 PM UTC, original submission:
This topic was originally posted on lwip-devel list on Jan 24, 2019. It appears to have never been resolved.
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Gar User <ghessler> |
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Corresponding source code
The original poster commented that the problem was solved by removing the condition, and unconditionally calling TCP_EVENT_ERR in tcp_input_delayed_close().
I have seen the same result when running v2.1.0.
This may be the fix, but I share the same concerns with the original poster regarding any side-effects.