CVE-2026-68205
Vulnerability Scoring
Analysis In Progress
CVE-2026-68205 Vulnerability Analysis & Exploit Details
CVE-2026-68205
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-2026-68205 Details
Status: Received on 10 Aug 2026, 13:20 UTC
Last updated: 🕐 23 Aug 2026, 13:16 UTC
Originally published on: 🕐 10 Aug 2026, 13:20 UTC
Time between publication and last update: 12 days
CVSS Release:
CVE-2026-68205 Vulnerability Summary
CVE-2026-68205: In the Linux kernel, the following vulnerability has been resolved: media: v4l2-fwnode: Fix subdev owner overwritten in v4l2_async_register_subdev_sensor() The v4l2 helper v4l2_async_register_subdev_sensor() calls v4l2_async_register_subdev(), which is a macro that expands to __v4l2_async_register_subdev(sd,THIS_MODULE). Since the macro is expanded inside v4l2-fwnode.c, THIS_MODULE resolves to the v4l2-fwnode module rather than the sensor driver module that originally set sd->owner. When v4l2-fwnode is built-in, THIS_MODULE evaluates to NULL, which then overwrites the sensor driver's owner with NULL. This causes the problem that the sensor module's reference count is never incremented during async registration, so the module can be removed while the subdevice is still in use by a notifier (e.g., a CSI-2 receiver bridge driver). Fix this by renaming v4l2_async_register_subdev_sensor() to __v4l2_async_register_subdev_sensor() with an added explicit module argument and introducing a wrapper macro: #define v4l2_async_register_subdev_sensor(sd) \ __v4l2_async_register_subdev_sensor(sd, THIS_MODULE) This ensures the sensor driver module is properly referenced even when the sensor driver does not init the owner field before calling v4l2_async_register_subdev_sensor() and prevents premature module removal.
Assessing the Risk of CVE-2026-68205
Access Complexity Graph
The exploitability of CVE-2026-68205 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-2026-68205
No exploitability data is available for CVE-2026-68205.
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-2026-68205, 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-2026-68205, 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-2026-68205 does not compromise confidentiality.
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Integrity:
None
CVE-2026-68205 does not impact data integrity.
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Availability:
None
CVE-2026-68205 does not affect system availability.
CVE-2026-68205 References
External References
- https://git.kernel.org/stable/c/067887ff93fddbb3a3fb84c900bc654ecfe5ba61
- https://git.kernel.org/stable/c/06cb687a5132fcffe624c0070576ab852ac6b568
- https://git.kernel.org/stable/c/47ef04cd13d38010b580056a9d8840aaab944841
- https://git.kernel.org/stable/c/c5e47cf9a6cffef73a1ed40b3648e6097aac165a
- https://git.kernel.org/stable/c/caea6bc68c925d63ca33d21b2255f47181943d61
- https://git.kernel.org/stable/c/cf9732fd6c4f2f803ccfc46d89489b6635590270
- https://git.kernel.org/stable/c/f35e85a9d919d7954d9a7752e4644c0b403ad025
CWE Common Weakness Enumeration
Unknown
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