CVE-2023-52763
i3c: master: mipi-i3c-hci: Fix a kernel panic for accessing DAT_data.
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Description
In the Linux kernel, the following vulnerability has been resolved: i3c: master: mipi-i3c-hci: Fix a kernel panic for accessing DAT_data. The `i3c_master_bus_init` function may attach the I2C devices before the I3C bus initialization. In this flow, the DAT `alloc_entry`` will be used before the DAT `init`. Additionally, if the `i3c_master_bus_init` fails, the DAT `cleanup` will execute before the device is detached, which will execue DAT `free_entry` function. The above scenario can cause the driver to use DAT_data when it is NULL.
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/39c71357e68e2f03766f9321b9f4882e49ff1442
- https://git.kernel.org/stable/c/3cb79a365e7cce8f121bba91312e2ddd206b9781
- https://git.kernel.org/stable/c/b53e9758a31c683fc8615df930262192ed5f034b
- https://git.kernel.org/stable/c/e64d23dc65810be4e3395d72df0c398f60c991f9
- https://git.kernel.org/stable/c/eed74230435c61eeb58abaa275b1820e6a4b7f02
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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