Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sh: dma: Fix DMA channel offset calculation Various SoCs of the SH3, SH4 and SH4A family, which use this driver, feature a differing number of DMA channels, which can be distributed between up to two DMAC modules. The existing implementation fails to correctly accommodate for all those variations, resulting in wrong channel offset calculations and leading to kernel panics. Rewrite dma_base_addr() in order to properly calculate channel offsets in a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that the correct DMAC module base is selected for the DMAOR register.
References
- https://git.kernel.org/stable/c/196f6c71905aa384c0177acf194a1144d480333b
- https://git.kernel.org/stable/c/479380acfa63247b5ac62476138f847aefc62692
- https://git.kernel.org/stable/c/4989627157735c1f1619f08e5bc1592418e7c878
- https://git.kernel.org/stable/c/8fb11fa4805699c6b73a9c8a9d45807f9874abe3
- https://git.kernel.org/stable/c/bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad
- https://git.kernel.org/stable/c/d1c946552af299f4fa85bf7da15e328123771128
- https://git.kernel.org/stable/c/e82e47584847129a20b8c9f4a1dcde09374fb0e0
- https://git.kernel.org/stable/c/e9e33faea104381bac80ac79328f0540fc2969f2
FAQ
What is CVE-2023-54255?
CVE-2023-54255 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: sh: dma: Fix DMA channel offset calculation Various SoCs of the SH3, SH4 and SH4A family, which use this driver, feature a differi...
How severe is CVE-2023-54255?
CVSS scoring is not yet available for CVE-2023-54255. Check NVD for updates.
Is there a patch for CVE-2023-54255?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.