buglwIP - A Lightweight TCP/IP stack - Bugs: bug #61525, altcp_tls: null dereference when...

 
 

You are not allowed to post comments on this tracker with your current authentication level.

bug #61525: altcp_tls: null dereference when unable to alloc pcb in tcp_listen_input

Submitter:  Josh <inojosh>
Submitted:  Mon 22 Nov 2021 09:12:25 PM UTC
   
 
Category:  apps Severity:  3 - Normal
Item Group:  Crash Error Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open Planned Release:  None
lwIP version:  2.1.3

Mon 22 Nov 2021 09:12:25 PM UTC, original submission:  

In tcp_listen_input, when a new PCB can't be created:

TCP_EVENT_ACCEPT(pcb, NULL, pcb->callback_arg, ERR_MEM, err);

leads to altcp_tcp_accept with new_tpcb as NULL.
There are no checks for this, and the NULL dereference eventually occurs in altcp_tcp_setup_callbacks.

Josh <inojosh>

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -email is unavailable- added by inojosh (Submitted the item)
  •  

    There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.

     

    No changes have been made to this item

    Back to the top

    Powered by Savane 3.13-f762.
    Corresponding source code