CVE-2024-40963
Published: July 16, 2024Last modified: July 16, 2024
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Not affected (6.1.33-r0) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.12.41-r0) |
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
- https://git.kernel.org/stable/c/ce5cdd3b05216b704a704f466fb4c2dff3778caf
- https://git.kernel.org/stable/c/da895fd6da438af8d9326b8f02d715a9c76c3b5b