CVE-2025-39788
Vulnerability Scoring
Analysis In Progress
CVE-2025-39788 Vulnerability Analysis & Exploit Details
CVE-2025-39788
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2025-39788 Details
Status: Received on 11 Sep 2025, 17:15 UTC
Published on: 11 Sep 2025, 17:15 UTC
CVSS Release:
CVE-2025-39788 Vulnerability Summary
CVE-2025-39788: In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE On Google gs101, the number of UTP transfer request slots (nutrs) is 32, and in this case the driver ends up programming the UTRL_NEXUS_TYPE incorrectly as 0. This is because the left hand side of the shift is 1, which is of type int, i.e. 31 bits wide. Shifting by more than that width results in undefined behaviour. Fix this by switching to the BIT() macro, which applies correct type casting as required. This ensures the correct value is written to UTRL_NEXUS_TYPE (0xffffffff on gs101), and it also fixes a UBSAN shift warning: UBSAN: shift-out-of-bounds in drivers/ufs/host/ufs-exynos.c:1113:21 shift exponent 32 is too large for 32-bit type 'int' For consistency, apply the same change to the nutmrs / UTMRL_NEXUS_TYPE write.
Assessing the Risk of CVE-2025-39788
Access Complexity Graph
The exploitability of CVE-2025-39788 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2025-39788
No exploitability data is available for CVE-2025-39788.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2025-39788, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2025-39788, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2025-39788 does not compromise confidentiality.
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Integrity:
None
CVE-2025-39788 does not impact data integrity.
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Availability:
None
CVE-2025-39788 does not affect system availability.
CVE-2025-39788 References
External References
- https://git.kernel.org/stable/c/01510a9e8222f11cce064410f3c2fcf0756c0a08
- https://git.kernel.org/stable/c/01aad16c2257ab8ff33b152b972c9f2e1af47912
- https://git.kernel.org/stable/c/098b2c8ee208c77126839047b9e6e1925bb35baa
- https://git.kernel.org/stable/c/5b9f1ef293428ea9c0871d96fcec2a87c4445832
- https://git.kernel.org/stable/c/6d53b2a134da77eb7fe65c5c7c7a3c193539a78a
- https://git.kernel.org/stable/c/c1f025da8f370a015e412b55cbcc583f91de8316
- https://git.kernel.org/stable/c/dc8fb963742f1a38d284946638f9358bdaa0ddee
CWE Common Weakness Enumeration
Unknown
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