CVE-2023-54255
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.
How to fix
- Linux Linuxbca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad, 479380acfa63247b5ac62476138f847aefc62692, 4989627157735c1f1619f08e5bc1592418e7c878, d1c946552af299f4fa85bf7da15e328123771128, 196f6c71905aa384c0177acf194a1144d480333b, 8fb11fa4805699c6b73a9c8a9d45807f9874abe3, e9e33faea104381bac80ac79328f0540fc2969f2, e82e47584847129a20b8c9f4a1dcde09374fb0e0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad, 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < 479380acfa63247b5ac62476138f847aefc62692, 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < 4989627157735c1f1619f08e5bc1592418e7c878, 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < d1c946552af299f4fa85bf7da15e328123771128, 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < 196f6c71905aa384c0177acf194a1144d480333b, 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < 8fb11fa4805699c6b73a9c8a9d45807f9874abe3, 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < e9e33faea104381bac80ac79328f0540fc2969f2, 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ≤ v < e82e47584847129a20b8c9f4a1dcde09374fb0e0, 3.5 | bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad, 479380acfa63247b5ac62476138f847aefc62692, 4989627157735c1f1619f08e5bc1592418e7c878, d1c946552af299f4fa85bf7da15e328123771128, 196f6c71905aa384c0177acf194a1144d480333b, 8fb11fa4805699c6b73a9c8a9d45807f9874abe3, e9e33faea104381bac80ac79328f0540fc2969f2, e82e47584847129a20b8c9f4a1dcde09374fb0e0 |
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