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» SmaugMuds.org » Bugfix Lists » AFKMud Bugfix List » AFKMud Bug Archive » [Bug] free_ban performs doubl...
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[Bug] free_ban performs double free on the ban_time member
< Newer Topic :: Older Topic > AFKMud 1.7

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Post is unread #1 May 23, 2005, 6:02 pm   Last edited Nov 13, 2005, 11:28 am by Samson
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Samson
Black Hand
GroupAdministrators
Posts3,639
JoinedJan 1, 2002

Bug: free_ban performs double free on the ban_time member
Discovered in: AFKMud 1.7
Danger: Low/Medium - Danger depends on safety of the DISPOSE macro.
Found by: GatewaySysop
Fixed by: GatewaySysop

---

ban.c, free_ban

Locate:
void free_ban( BAN_DATA * pban )
{
   DISPOSE( pban->name );
   DISPOSE( pban->ban_time );
   DISPOSE( pban->note );
   DISPOSE( pban->user );
   DISPOSE( pban->ban_by );
   DISPOSE( pban->ban_time );
   DISPOSE( pban );
}


Remove the second call to DISPOSE pban->ban_time

The ban_time member is being double-freed and may cause problems depending on the safety level of the DISPOSE macro in your codebase. Older versions of it don't always check to see if the memory is already NULL.
       
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