https://bugzilla.mindrot.org/show_bug.cgi?id=2773
Bug ID: 2773
Summary: Potential segfault from ssh_remote_ipaddr()
Product: Portable OpenSSH
Version: 7.5p1
Hardware: Other
OS: Linux
Status: NEW
Severity: enhancement
Priority: P5
Component: sshd
Assignee: [email protected]
Reporter: [email protected]
Created attachment 3050
--> https://bugzilla.mindrot.org/attachment.cgi?id=3050&action=edit
do not dereference NULL pointer before checking its validity
The function ssh_remote_ipaddr() is dereferencing ssh->state pointer
before it is checking it is not NULL.
This function is probably not called with closed connections in
upstream OpenSSH, but we are attaching audit messages explaining
reasons for failures and they can be used after the connection got
closed so we can see segfaults in some occasions.
For more information and debugging, see the RH bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=1488083
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