CVE-2024-26747
usb: roles: fix NULL pointer issue when put module's reference
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Description
In the Linux kernel, the following vulnerability has been resolved: usb: roles: fix NULL pointer issue when put module's reference In current design, usb role class driver will get usb_role_switch parent's module reference after the user get usb_role_switch device and put the reference after the user put the usb_role_switch device. However, the parent device of usb_role_switch may be removed before the user put the usb_role_switch. If so, then, NULL pointer issue will be met when the user put the parent module's reference. This will save the module pointer in structure of usb_role_switch. Then, we don't need to find module by iterating long relations.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/0158216805ca7e498d07de38840d2732166ae5fa
- https://git.kernel.org/stable/c/01f82de440f2ab07c259b7573371e1c42e5565db
- https://git.kernel.org/stable/c/1c9be13846c0b2abc2480602f8ef421360e1ad9e
- https://git.kernel.org/stable/c/4b45829440b1b208948b39cc71f77a37a2536734
- https://git.kernel.org/stable/c/e279bf8e51893e1fe160b3d8126ef2dd00f661e1
References (7)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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