Bug 2355439 (CVE-2023-53003)

Summary: CVE-2023-53003 kernel: EDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_info
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
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-03-27 17:01:36 UTC 
In the Linux kernel, the following vulnerability has been resolved:

EDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_info

The memory for llcc_driv_data is allocated by the LLCC driver. But when
it is passed as the private driver info to the EDAC core, it will get freed
during the qcom_edac driver release. So when the qcom_edac driver gets probed
again, it will try to use the freed data leading to the use-after-free bug.

Hence, do not pass llcc_driv_data as pvt_info but rather reference it
using the platform_data pointer in the qcom_edac driver.
Comment 1 Robb Gatica 2025-03-28 01:33:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025032712-CVE-2023-53003-8256@gregkh/T