Bug 2422809 (CVE-2025-68303)

Summary: CVE-2025-68303 kernel: Linux kernel: Memory corruption in punit_ipc due to incorrect pointer handling
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: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `punit_ipc` component. This vulnerability arises from incorrect handling of a pointer, where the address of a pointer was passed instead of the pointer itself. This error can lead to memory corruption, potentially allowing a local attacker to compromise the system's integrity, confidentiality, and availability.
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Description OSIDB Bzimport 2025-12-16 16:03:14 UTC 
In the Linux kernel, the following vulnerability has been resolved:

platform/x86: intel: punit_ipc: fix memory corruption

This passes the address of the pointer "&punit_ipcdev" when the intent
was to pass the pointer itself "punit_ipcdev" (without the ampersand).
This means that the:

	complete(&ipcdev->cmd_complete);

in intel_punit_ioc() will write to a wrong memory address corrupting it.
Comment 1 Alexander B 2025-12-16 19:09:12 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025121644-CVE-2025-68303-2c61@gregkh/T