Bug 2312065 (CVE-2024-46677)

Summary: CVE-2024-46677 kernel: gtp: fix a potential NULL pointer dereference
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2312178    
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Description OSIDB Bzimport 2024-09-13 06:20:45 UTC 
In the Linux kernel, the following vulnerability has been resolved:

gtp: fix a potential NULL pointer dereference

When sockfd_lookup() fails, gtp_encap_enable_socket() returns a
NULL pointer, but its callers only check for error pointers thus miss
the NULL pointer case.

Fix it by returning an error pointer with the error code carried from
sockfd_lookup().

(I found this bug during code inspection.)
Comment 1 Michal Findra 2024-09-13 11:32:46 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024091336-CVE-2024-46677-b53c@gregkh/T