#4 Sef Fault when processing wireless derived data

[Anonymous]

This programme causes segmentation faults when processing wireless derived data streams. Specifically:

Ubuntu 6.1 running on an i686 system.

Data is derived from monitoring wireless links using Kismet. The Kismet dump file is processed to remove 802.11 headers using airdecap-ng and then fed to tcpxtract.

The crash occurs in the set_segment_marks function in extract.c, I have not yet been able to determine the mechanism that triggers this, however the seg fault occurs when the eptr->segment.start = 0; line is executed - I assume this is because the address of eptr->segment.start is somehow invalid.

ottawameeting@vodafone.net

[simon lundell]

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This bug seems to be caused by that set_segment_marks gets called with an uninitialized value. The attached patch seems to fix this issue.

Best regards,
Simon

patch for sessionlist.c:

63a64
> (*last_slist)->extract_list = NULL;

[Anonymous]

Now it works ok, thank you!