Bug 2373384 (CVE-2025-38077)

Summary: CVE-2025-38077 kernel: Linux kernel: Buffer overflow in dell-wmi-sysman leading to denial of service, information disclosure, or code execution
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
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel. A local attacker with low privileges could exploit a buffer overflow vulnerability in the `dell-wmi-sysman` component's `current_password_store()` function. This occurs when an empty string is provided as input, leading to an out-of-bounds write. Successful exploitation could result in a denial of service, information disclosure, or potentially arbitrary code execution.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2025-06-18 10:04:49 UTC 
In the Linux kernel, the following vulnerability has been resolved:

platform/x86: dell-wmi-sysman: Avoid buffer overflow in current_password_store()

If the 'buf' array received from the user contains an empty string, the
'length' variable will be zero. Accessing the 'buf' array element with
index 'length - 1' will result in a buffer overflow.

Add a check for an empty string.

Found by Linux Verification Center (linuxtesting.org) with SVACE.
Comment 1 Avinash Hanwate 2025-06-20 15:09:59 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025061840-CVE-2025-38077-f53e@gregkh/T