CVE-2021-47047

Advisory lineage Upstream: 0 Downstream: 7
Analyzed
Published: 28 Feb 2024, 08:13
Last modified:11 May 2026, 13:47

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Feb 2024, 08:13
Published
Vulnerability first disclosed
11 May 2026, 13:47
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails The spi controller supports 44-bit address space on AXI in DMA mode, so set dma_addr_t width to 44-bit to avoid using a swiotlb mapping. In addition, if dma_map_single fails, it should return immediately instead of continuing doing the DMA operation which bases on invalid address. This fixes the following crash which occurs in reading a big block from flash: [ 123.633577] zynqmp-qspi ff0f0000.spi: swiotlb buffer is full (sz: 4194304 bytes), total 32768 (slots), used 0 (slots) [ 123.644230] zynqmp-qspi ff0f0000.spi: ERR:rxdma:memory not mapped [ 123.784625] Unable to handle kernel paging request at virtual address 00000000003fffc0 [ 123.792536] Mem abort info: [ 123.795313] ESR = 0x96000145 [ 123.798351] EC = 0x25: DABT (current EL), IL = 32 bits [ 123.803655] SET = 0, FnV = 0 [ 123.806693] EA = 0, S1PTW = 0 [ 123.809818] Data abort info: [ 123.812683] ISV = 0, ISS = 0x00000145 [ 123.816503] CM = 1, WnR = 1 [ 123.819455] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000805047000 [ 123.825887] [00000000003fffc0] pgd=0000000803b45003, p4d=0000000803b45003, pud=0000000000000000 [ 123.834586] Internal error: Oops: 96000145 [#1] PREEMPT SMP

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Affected Systems

  • linux•linux

    ≥ 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e, < 5980a3b9c933408bc22b0e349b78c3ebd7cbf880 | ≥ 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e, < c26c026eb496261dbc0adbf606cc81989cd2038c | ≥ 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e, < bad5a23cf2b477fa78b85fd392736dae09a1e818 | ≥ 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e, < 126bdb606fd2802454e6048caef1be3e25dd121e | 5.10

  • linux•linux_kernel

    ≥ 5.10, < 5.10.37 | ≥ 5.11, < 5.11.21 | ≥ 5.12, < 5.12.4

References (4)