Bug 2400060 (CVE-2025-39794)

Summary: CVE-2025-39794 kernel: ARM: tegra: Use I/O memcpy to write to IRAM
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: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw exists in the Linux kernel’s ARM Tegra IRAM handling,a copy operation using the standard memcpy function allows the kernel address-sanitizer (KASAN) to trigger a crash when checking memory boundaries, leading to damage to system availability.
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Description OSIDB Bzimport 2025-09-29 07:02:11 UTC
In the Linux kernel, the following vulnerability has been resolved:

ARM: tegra: Use I/O memcpy to write to IRAM

Kasan crashes the kernel trying to check boundaries when using the
normal memcpy.