CVE-2022-50415
parisc: led: Fix potential null-ptr-deref in start_task()
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Description
In the Linux kernel, the following vulnerability has been resolved: parisc: led: Fix potential null-ptr-deref in start_task() start_task() calls create_singlethread_workqueue() and not checked the ret value, which may return NULL. And a null-ptr-deref may happen: start_task() create_singlethread_workqueue() # failed, led_wq is NULL queue_delayed_work() queue_delayed_work_on() __queue_delayed_work() # warning here, but continue __queue_work() # access wq->flags, null-ptr-deref Check the ret value and return -ENOMEM if it is NULL.
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/c6db0c32f39684c89c97bc1ba1c9c4249ca09e48
- https://git.kernel.org/stable/c/fc6d0f65f22040c6cc8a5ce032bf90252629de50
- https://git.kernel.org/stable/c/fc307b2905a3dd75c50a53b4d87ac9c912fb7c4e
- https://git.kernel.org/stable/c/5e4500454d75dd249be4695d83afa3ba0724c37e
- https://git.kernel.org/stable/c/3505c187b86136250b39e62c72a3a70435277af6
References (9)
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
- NONE
- Integrity
- NONE
- Availability
- HIGH
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