CVE-2021-47047 (GCVE-0-2021-47047)
Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2025-05-04 07:03
VLAI?
Title
spi: spi-zynqmp-gqspi: return -ENOMEM if dma_map_single fails
Summary
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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e , < 5980a3b9c933408bc22b0e349b78c3ebd7cbf880
(git)
Affected: 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e , < c26c026eb496261dbc0adbf606cc81989cd2038c (git) Affected: 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e , < bad5a23cf2b477fa78b85fd392736dae09a1e818 (git) Affected: 1c26372e5aa9e53391a1f8fe0dc7cd93a7e5ba9e , < 126bdb606fd2802454e6048caef1be3e25dd121e (git) |
||
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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