CVE-2021-47401
ipack: ipoctal: fix stack information leak
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Description
In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix stack information leak The tty driver name is used also after registering the driver and must specifically not be allocated on the stack to avoid leaking information to user space (or triggering an oops). Drivers should not try to encode topology information in the tty device name but this one snuck in through staging without anyone noticing and another driver has since copied this malpractice. Fixing the ABI is a separate issue, but this at least plugs the security hole.
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/0a9c36a2e06a249acbed64e8e0b84637c2ad7575
- https://git.kernel.org/stable/c/2725925982dc96a78069cd118ea3d66759bfdad7
- https://git.kernel.org/stable/c/5f6a309a699675680df15d9b6d389114515b4426
- https://git.kernel.org/stable/c/741ea2670e021350e54f491106bdaa22dc50e6a0
- https://git.kernel.org/stable/c/829f13d6079cf7a2465522f39acb43033e9b320d
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
- NONE
- Availability
- NONE
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