CVE-2022-49445
pinctrl: renesas: core: 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: core: 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/5376e3d904532e657fd7ca1a9b1ff3d351527b90
- https://git.kernel.org/stable/c/5ed0519d425619b435150372cce2ffeec71581fa
- https://git.kernel.org/stable/c/e3a1ad8fd0ac11f4fa1260c23b5db71a25473254
- https://git.kernel.org/stable/c/f991879762392c19661af5b722578089a12b305f
- https://git.kernel.org/stable/c/fb4f022b3ad1f3ff3cafdbc7d51896090ae17701
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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