CVE-2022-49449
pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources()
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Description
In the Linux kernel, the following vulnerability has been resolved: pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources() It will cause null-ptr-deref when using 'res', if platform_get_resource() returns NULL, so move using 'res' after devm_ioremap_resource() that will check it to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code.
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/01f9e02e0f13df3fd291676dc80054e977be1601
- https://git.kernel.org/stable/c/2f661477c2bb8068194dbba9738d05219f111c6e
- https://git.kernel.org/stable/c/34c719b8fdfbd0c7c54cae56e6b0f16e9f8bf03e
- https://git.kernel.org/stable/c/b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c
- https://git.kernel.org/stable/c/c16b59d445135c8026a04e388d8b2762feaa3b3b
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
- NONE
- Integrity
- NONE
- Availability
- HIGH
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