Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.16, < 6.18.36 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/01f7d4b504580664d36faea5671cde5e3f0d8a5bPatch
- https://git.kernel.org/stable/c/cdb96c42db7b256348f9b57718debfaa4bca6b39Patch
- https://git.kernel.org/stable/c/f9f25118faa4dd2b6e3d14a03d123bbdbd59925dPatch
FAQ
What is CVE-2026-53338?
CVE-2026-53338 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 NUL...
How severe is CVE-2026-53338?
CVE-2026-53338 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53338?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.