CVE-2025-40356

CVE-2025-40356 is a security vulnerability that is still awaiting full analysis and scoring. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

In the Linux kernel, the following vulnerability has been resolved: spi: rockchip-sfc: Fix DMA-API usage Use DMA-API dma_map_single() call for getting the DMA address of the transfer buffer instead of hacking with virt_to_phys(). This fixes the following DMA-API debug warning: ------------[ cut here ]------------ DMA-API: rockchip-sfc fe300000.spi: device driver tries to sync DMA memory it has not allocated [device address=0x000000000cf70000] [size=288 bytes] WARNING: kernel/dma/debug.c:1106 at check_sync+0x1d8/0x690, CPU#2: systemd-udevd/151 Modules linked in: ... Hardware name: Hardkernel ODROID-M1 (DT) pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_sync+0x1d8/0x690 lr : check_sync+0x1d8/0x690 .. Call trace: check_sync+0x1d8/0x690 (P) debug_dma_sync_single_for_cpu+0x84/0x8c __dma_sync_single_for_cpu+0x88/0x234 rockchip_sfc_exec_mem_op+0x4a0/0x798 [spi_rockchip_sfc] spi_mem_exec_op+0x408/0x498 spi_nor_read_data+0x170/0x184 spi_nor_read_sfdp+0x74/0xe4 spi_nor_parse_sfdp+0x120/0x11f0 spi_nor_sfdp_init_params_deprecated+0x3c/0x8c spi_nor_scan+0x690/0xf88 spi_nor_probe+0xe4/0x304 spi_mem_probe+0x6c/0xa8 spi_probe+0x94/0xd4 really_probe+0xbc/0x298 ...

Frequently asked questions

What is CVE-2025-40356?
In the Linux kernel, the following vulnerability has been resolved: spi: rockchip-sfc: Fix DMA-API usage Use DMA-API dma_map_single() call for getting the DMA address of the transfer buffer instead of hacking with virt_to_phys(). This fixes the following DMA-API debug warning: ------------[ cut here ]------------ DMA-API: rockchip-sfc fe300000.spi: device driver tries to sync DMA memory it has not allocated [device address=0x000000000cf70000] [size=288 bytes] WARNING: kernel/dma/debug.c:1106 at check_sync+0x1d8/0x690, CPU#2: systemd-udevd/151 Modules linked in: ... Hardware name: Hardkernel ODROID-M1 (DT) pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_sync+0x1d8/0x690 lr : check_sync+0x1d8/0x690 .. Call trace: check_sync+0x1d8/0x690 (P) debug_dma_sync_single_for_cpu+0x84/0x8c __dma_sync_single_for_cpu+0x88/0x234 rockchip_sfc_exec_mem_op+0x4a0/0x798 [spi_rockchip_sfc] spi_mem_exec_op+0x408/0x498 spi_nor_read_data+0x170/0x184 spi_nor_read_sfdp+0x74/0xe4 spi_nor_parse_sfdp+0x120/0x11f0 spi_nor_sfdp_init_params_deprecated+0x3c/0x8c spi_nor_scan+0x690/0xf88 spi_nor_probe+0xe4/0x304 spi_mem_probe+0x6c/0xa8 spi_probe+0x94/0xd4 really_probe+0xbc/0x298 ...
Is CVE-2025-40356 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-40356?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40356 have an EU (EUVD) identifier?
Yes. CVE-2025-40356 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203631.
When was CVE-2025-40356 published?
CVE-2025-40356 was published on 2025-12-16 and last updated on 2026-06-17.

References