CVE-2022-49451
firmware: arm_scmi: Fix list protocols enumeration in the base protocol
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Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix list protocols enumeration in the base protocol While enumerating protocols implemented by the SCMI platform using BASE_DISCOVER_LIST_PROTOCOLS, the number of returned protocols is currently validated in an improper way since the check employs a sum between unsigned integers that could overflow and cause the check itself to be silently bypassed if the returned value 'loop_num_ret' is big enough. Fix the validation avoiding the addition.
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/1052f22e127d0c34c3387bb389424ba1c61491ff
- https://git.kernel.org/stable/c/2ccfcd7a09c826516edcfe464b05071961aada3f
- https://git.kernel.org/stable/c/444a2d27fe9867d0da4b28fc45b793f32e099ab8
- https://git.kernel.org/stable/c/6e7978695f4a6cbd83616b5a702b77fa2087b247
- https://git.kernel.org/stable/c/8009120e0354a67068e920eb10dce532391361d0
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
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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