https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261458
Bug ID: 261458
Summary: Fix a possible Null pointer dereference in
igmp_domifattach()
Product: Base System
Version: Unspecified
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 231298
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=231298&action=edit
A simple fix for this bug
In sys/netinet/igmp.c file, the return value of igi_alloc_locked() is assigned
to igi and there is a dereference of it right after that, which would lead to
NULL pointer dereference on failure of allocation.
Fix this bug by adding a NULL check of igi.
This bug is found by static analyzer, please advise.
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