CVE-2023-54255

Description

In the Linux kernel, the following vulnerability has been resolved:sh: dma: Fix DMA channel offset calculationVarious SoCs of the SH3, SH4 and SH4A family, which use this driver,feature a differing number of DMA channels, which can be distributedbetween up to two DMAC modules. The existing implementation fails tocorrectly accommodate for all those variations, resulting in wrongchannel offset calculations and leading to kernel panics.Rewrite dma_base_addr() in order to properly calculate channel offsetsin a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so thatthe correct DMAC module base is selected for the DMAOR register.

Risk Information

Base Score

8.6

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:U/RC:C

EPSS Score

Exploitation Probability

0.036

Associated Vulnerability

No records found

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234