net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues()
of_reserved_mem_lookup() may return NULL if the reserved memory region
referenced by the "memory-region" phandle is not found in the reserved
memory table (e.g. due to a misconfigured DTS or a removed
memory-region node). The current code dereferences the returned
pointer without checking for NULL, leading to a kernel NULL pointer
dereference at the following lines:
dma_addr = rmem->base; // line 1156
num_desc = div_u64(rmem->size, buf_size); // line 1160
Add a NULL check after of_reserved_mem_lookup() and return -ENODEV if
the lookup fails, which is consistent with the existing error handling
for of_parse_phandle() failure in the same code block.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
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| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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Wed, 01 Jul 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues() of_reserved_mem_lookup() may return NULL if the reserved memory region referenced by the "memory-region" phandle is not found in the reserved memory table (e.g. due to a misconfigured DTS or a removed memory-region node). The current code dereferences the returned pointer without checking for NULL, leading to a kernel NULL pointer dereference at the following lines: dma_addr = rmem->base; // line 1156 num_desc = div_u64(rmem->size, buf_size); // line 1160 Add a NULL check after of_reserved_mem_lookup() and return -ENODEV if the lookup fails, which is consistent with the existing error handling for of_parse_phandle() failure in the same code block. | |
| Title | net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues() | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-07-01T13:32:21.147Z
Reserved: 2026-06-09T07:44:35.399Z
Link: CVE-2026-53338
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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No weakness.