Bug 2348311 (CVE-2021-47651)

Summary: CVE-2021-47651 kernel: soc: qcom: rpmpd: Check for null return of devm_kcalloc
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 03:25:00 UTC 
In the Linux kernel, the following vulnerability has been resolved:

soc: qcom: rpmpd: Check for null return of devm_kcalloc

Because of the possible failure of the allocation, data->domains might
be NULL pointer and will cause the dereference of the NULL pointer
later.
Therefore, it might be better to check it and directly return -ENOMEM
without releasing data manually if fails, because the comment of the
devm_kmalloc() says "Memory allocated with this function is
automatically freed on driver detach.".
Comment 1 Avinash Hanwate 2025-02-26 12:58:33 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022649-CVE-2021-47651-57dd@gregkh/T
Comment 4 Avinash Hanwate 2025-02-26 17:14:59 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022649-CVE-2021-47651-57dd@gregkh/T