# CVE-2026-53338: linux: In the Linux kernel, the following vulnerability has been resolved:  net: airoha: Add NULL check for of_reserved_mem_...

CVE-2026-53338 is fixed in linux on 1 platform by DEBIAN-CVE-2026-53338 (version 7.0.13-1), released July 2, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-53338
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 1, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.0.13-1 | [DEBIAN-CVE-2026-53338](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53338.md) | Jul 2, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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