CVE-2024-40963
mips: bmips: BCM6358: make sure CBR is correctly set
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Description
In the Linux kernel, the following vulnerability has been resolved: mips: bmips: BCM6358: make sure CBR is correctly set It was discovered that some device have CBR address set to 0 causing kernel panic when arch_sync_dma_for_cpu_all is called. This was notice in situation where the system is booted from TP1 and BMIPS_GET_CBR() returns 0 instead of a valid address and !!(read_c0_brcm_cmt_local() & (1 << 31)); not failing. The current check whether RAC flush should be disabled or not are not enough hence lets check if CBR is a valid address or not.
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/10afe5f7d30f6fe50c2b1177549d0e04921fc373
- https://git.kernel.org/stable/c/2cd4854ef14a487bcfb76c7980675980cad27b52
- https://git.kernel.org/stable/c/36d771ce6028b886e18a4a8956a5d23688e4e13d
- https://git.kernel.org/stable/c/6c0f6ccd939166f56a904c792d7fcadae43b9085
- https://git.kernel.org/stable/c/89167072fd249e5f23ae2f8093f87da5925cef27
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
- NONE
- Integrity
- NONE
- Availability
- HIGH
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