Bug 2348065 (CVE-2022-49060)

Summary: CVE-2022-49060 kernel: net/smc: Fix NULL pointer dereference in smc_pnet_find_ib()
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
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the smc module in the Linux kernel. A NULL pointer dereference can be triggered due to a missing check before calling the dev_name function, resulting in a denial of service.
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Description OSIDB Bzimport 2025-02-26 03:16:24 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net/smc: Fix NULL pointer dereference in smc_pnet_find_ib()

dev_name() was called with dev.parent as argument but without to
NULL-check it before.
Solve this by checking the pointer before the call to dev_name().
Comment 1 Avinash Hanwate 2025-02-26 12:10:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022653-CVE-2022-49060-6210@gregkh/T
Comment 4 Avinash Hanwate 2025-02-26 16:38:57 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022653-CVE-2022-49060-6210@gregkh/T