CVE-2024-36898
gpiolib: cdev: fix uninitialised kfifo
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Description
In the Linux kernel, the following vulnerability has been resolved: gpiolib: cdev: fix uninitialised kfifo If a line is requested with debounce, and that results in debouncing in software, and the line is subsequently reconfigured to enable edge detection then the allocation of the kfifo to contain edge events is overlooked. This results in events being written to and read from an uninitialised kfifo. Read events are returned to userspace. Initialise the kfifo in the case where the software debounce is already active.
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/1a51e24404d77bb3307c1e39eee0d8e86febb1a5
- https://git.kernel.org/stable/c/883e4bbf06eb5fb7482679e4edb201093e9f55a2
- https://git.kernel.org/stable/c/bd7139a70ee8d8ea872b223e043730cf6f5e2b0e
- https://git.kernel.org/stable/c/ee0166b637a5e376118e9659e5b4148080f1d27e
- https://git.kernel.org/stable/c/c87cc32bc48b187067e089b15ab7a6a7eed5767d
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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