CVE-2023-53116
nvmet: avoid potential UAF in nvmet_req_complete()
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Description
In the Linux kernel, the following vulnerability has been resolved: nvmet: avoid potential UAF in nvmet_req_complete() An nvme target ->queue_response() operation implementation may free the request passed as argument. Such implementation potentially could result in a use after free of the request pointer when percpu_ref_put() is called in nvmet_req_complete(). Avoid such problem by using a local variable to save the sq pointer before calling __nvmet_req_complete(), thus avoiding dereferencing the req pointer after that function call.
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/04c394208831d5e0d5cfee46722eb0f033cd4083
- https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286
- https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a
- https://git.kernel.org/stable/c/a6317235da8aa7cb97529ebc8121cc2a4c4c437a
- https://git.kernel.org/stable/c/bcd535f07c58342302a2cd2bdd8894fe0872c8a9
References (8)
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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