CVE-2025-68808
Vulnerability Scoring
Analysis In Progress
CVE-2025-68808 Vulnerability Analysis & Exploit Details
CVE-2025-68808
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-2025-68808 Details
Status: Awaiting Analysis
Last updated: 🕐 19 Jan 2026, 13:16 UTC
Originally published on: 🕓 13 Jan 2026, 16:16 UTC
Time between publication and last update: 5 days
CVSS Release:
CVE-2025-68808 Vulnerability Summary
CVE-2025-68808: In the Linux kernel, the following vulnerability has been resolved: media: vidtv: initialize local pointers upon transfer of memory ownership vidtv_channel_si_init() creates a temporary list (program, service, event) and ownership of the memory itself is transferred to the PAT/SDT/EIT tables through vidtv_psi_pat_program_assign(), vidtv_psi_sdt_service_assign(), vidtv_psi_eit_event_assign(). The problem here is that the local pointer where the memory ownership transfer was completed is not initialized to NULL. This causes the vidtv_psi_pmt_create_sec_for_each_pat_entry() function to fail, and in the flow that jumps to free_eit, the memory that was freed by vidtv_psi_*_table_destroy() can be accessed again by vidtv_psi_*_event_destroy() due to the uninitialized local pointer, so it is freed once again. Therefore, to prevent use-after-free and double-free vulnerability, local pointers must be initialized to NULL when transferring memory ownership.
Assessing the Risk of CVE-2025-68808
Access Complexity Graph
The exploitability of CVE-2025-68808 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-2025-68808
No exploitability data is available for CVE-2025-68808.
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-2025-68808, 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-2025-68808, 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-2025-68808 does not compromise confidentiality.
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Integrity:
None
CVE-2025-68808 does not impact data integrity.
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Availability:
None
CVE-2025-68808 does not affect system availability.
CVE-2025-68808 References
External References
- https://git.kernel.org/stable/c/12ab6ebb37789b84073e83e4d9b14a5e0d133323
- https://git.kernel.org/stable/c/30f4d4e5224a9e44e9ceb3956489462319d804ce
- https://git.kernel.org/stable/c/3caa18d35f1dabe85a3dd31bc387f391ac9f9b4e
- https://git.kernel.org/stable/c/98aabfe2d79f74613abc2b0b1cef08f97eaf5322
- https://git.kernel.org/stable/c/a69c7fd603bf5ad93177394fbd9711922ee81032
- https://git.kernel.org/stable/c/c342e294dac4988c8ada759b2f057246e48c5108
- https://git.kernel.org/stable/c/fb9bd6d8d314b748e946ed6555eb4a956ee8c4d8
CWE Common Weakness Enumeration
Unknown
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