Bug 2363413 (CVE-2022-49866)

Summary: CVE-2022-49866 kernel: net: wwan: mhi: fix memory leak in mhi_mbim_dellink
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2025-05-01 15:03:41 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: wwan: mhi: fix memory leak in mhi_mbim_dellink

MHI driver registers network device without setting the
needs_free_netdev flag, and does NOT call free_netdev() when
unregisters network device, which causes a memory leak.

This patch sets needs_free_netdev to true when registers
network device, which makes netdev subsystem call free_netdev()
automatically after unregister_netdevice().
Comment 1 Avinash Hanwate 2025-05-02 05:40:23 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050149-CVE-2022-49866-3ac8@gregkh/T