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CVE-2023-52449 Detail


In the Linux kernel, the following vulnerability has been resolved: mtd: Fix gluebi NULL pointer dereference caused by ftl notifier If both ftl.ko and gluebi.ko are loaded, the notifier of ftl triggers NULL pointer dereference when trying to access ‘gluebi->desc’ in gluebi_read(). ubi_gluebi_init ubi_register_volume_notifier ubi_enumerate_volumes ubi_notify_all gluebi_notify nb->notifier_call() gluebi_create mtd_device_register mtd_device_parse_register add_mtd_device blktrans_notify_add not->add() ftl_add_mtd tr->add_mtd() scan_header mtd_read mtd_read_oob mtd_read_oob_std gluebi_read mtd->read() gluebi->desc - NULL Detailed reproduction information available at the Link [1], In the normal case, obtain gluebi->desc in the gluebi_get_device(), and access gluebi->desc in the gluebi_read(). However, gluebi_get_device() is not executed in advance in the ftl_add_mtd() process, which leads to NULL pointer dereference. The solution for the gluebi module is to run jffs2 on the UBI volume without considering working with ftl or mtdblock [2]. Therefore, this problem can be avoided by preventing gluebi from creating the mtdblock device after creating mtd partition of the type MTD_UBIVOLUME.


CVSS 4.0 Severity and Metrics:

NVD assessment not yet provided.

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/001a3f59d8c914ef8273461d4bf495df384cc5f8 Patch 
https://git.kernel.org/stable/c/1bf4fe14e97cda621522eb2f28b0a4e87c5b0745 Patch 
https://git.kernel.org/stable/c/5389407bba1eab1266c6d83e226fb0840cb98dd5 Patch 
https://git.kernel.org/stable/c/a43bdc376deab5fff1ceb93dca55bcab8dbdc1d6 Patch 
https://git.kernel.org/stable/c/aeba358bcc8ffddf9b4a9bd0e5ec9eb338d46022 Patch 
https://git.kernel.org/stable/c/b36aaa64d58aaa2f2cbc8275e89bae76a2b6c3dc Patch 
https://git.kernel.org/stable/c/cfd7c9d260dc0a3baaea05a122a19ab91e193c65 Patch 
https://git.kernel.org/stable/c/d8ac2537763b54d278b80b2b080e1652523c7d4c Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-476 NULL Pointer Dereference cwe source acceptance level NIST  

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Change History

4 change records found show changes

Quick Info

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