Bug 2396385 (CVE-2023-53397)

Summary: CVE-2023-53397 kernel: modpost: fix off by one in is_executable_section()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was exist's in the Linux kernel’s module-post processing component, in the function is_executable_section(). Due to an off-by-one error (using > instead of >=), the code may perform an out-of-bounds array access.
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Description OSIDB Bzimport 2025-09-18 14:01:59 UTC 
In the Linux kernel, the following vulnerability has been resolved:

modpost: fix off by one in is_executable_section()

The > comparison should be >= to prevent an out of bounds array
access.
Comment 1 Keith Grant 2025-09-18 17:23:31 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091859-CVE-2023-53397-2076@gregkh/T