net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues()

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Summary

CVECVE-2026-53338
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-01 14:16:41 UTC
Updated2026-07-01 14:16:41 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001540000 probability, percentile 0.049660000 (date 2026-07-03)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3a1ce9e3d01bbf3912c3e3f81cb554d558eb715b 01f7d4b504580664d36faea5671cde5e3f0d8a5b git Not specified
CNA Linux Linux affected 3a1ce9e3d01bbf3912c3e3f81cb554d558eb715b cdb96c42db7b256348f9b57718debfaa4bca6b39 git Not specified
CNA Linux Linux affected 3a1ce9e3d01bbf3912c3e3f81cb554d558eb715b f9f25118faa4dd2b6e3d14a03d123bbdbd59925d git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.36 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.13 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/01f7d4b504580664d36faea5671cde5e3f0d8a5b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cdb96c42db7b256348f9b57718debfaa4bca6b39 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f9f25118faa4dd2b6e3d14a03d123bbdbd59925d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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