CVE-2024-40963

mips: bmips: BCM6358: make sure CBR is correctly set

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.

N/A

CVSS

Severity:

EPSS 0.19%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/10afe5f7d30f6fe50c2b1177549d0e04921fc373
https://git.kernel.org/stable/c/36d771ce6028b886e18a4a8956a5d23688e4e13d
https://git.kernel.org/stable/c/89167072fd249e5f23ae2f8093f87da5925cef27
https://git.kernel.org/stable/c/6c0f6ccd939166f56a904c792d7fcadae43b9085
https://git.kernel.org/stable/c/2cd4854ef14a487bcfb76c7980675980cad27b52
https://git.kernel.org/stable/c/da895fd6da438af8d9326b8f02d715a9c76c3b5b
https://git.kernel.org/stable/c/ce5cdd3b05216b704a704f466fb4c2dff3778caf

Frequently Asked Questions

What is the severity of CVE-2024-40963?: CVE-2024-40963 has not yet been assigned a CVSS score.
How to fix CVE-2024-40963?: To fix CVE-2024-40963, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-40963 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-40963 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-40963?: CVE-2024-40963 affects Linux Linux, Linux Linux.

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