Bug 2348224 (CVE-2022-49527)

Summary: CVE-2022-49527 kernel: media: venus: hfi: avoid null dereference in deinit
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:21:56 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: venus: hfi: avoid null dereference in deinit

If venus_probe fails at pm_runtime_put_sync the error handling first
calls hfi_destroy and afterwards hfi_core_deinit. As hfi_destroy sets
core->ops to NULL, hfi_core_deinit cannot call the core_deinit function
anymore.

Avoid this null pointer derefence by skipping the call when necessary.
Comment 1 Avinash Hanwate 2025-02-26 11:05:46 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022612-CVE-2022-49527-db75@gregkh/T
Comment 2 Avinash Hanwate 2025-02-26 15:36:03 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022612-CVE-2022-49527-db75@gregkh/T