{"id":"CVE-2026-53338","summary":"net: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: Add NULL check for of_reserved_mem_lookup() in airoha_qdma_init_hfwd_queues()\n\nof_reserved_mem_lookup() may return NULL if the reserved memory region\nreferenced by the \"memory-region\" phandle is not found in the reserved\nmemory table (e.g. due to a misconfigured DTS or a removed\nmemory-region node).  The current code dereferences the returned\npointer without checking for NULL, leading to a kernel NULL pointer\ndereference at the following lines:\n\n    dma_addr = rmem-\u003ebase;                          // line 1156\n    num_desc = div_u64(rmem-\u003esize, buf_size);       // line 1160\n\nAdd a NULL check after of_reserved_mem_lookup() and return -ENODEV if\nthe lookup fails, which is consistent with the existing error handling\nfor of_parse_phandle() failure in the same code block.","modified":"2026-07-08T08:13:43.765557219Z","published":"2026-07-01T13:32:21.147Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53338.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/01f7d4b504580664d36faea5671cde5e3f0d8a5b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cdb96c42db7b256348f9b57718debfaa4bca6b39"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f9f25118faa4dd2b6e3d14a03d123bbdbd59925d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53338.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53338"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3a1ce9e3d01bbf3912c3e3f81cb554d558eb715b"},{"fixed":"01f7d4b504580664d36faea5671cde5e3f0d8a5b"},{"fixed":"cdb96c42db7b256348f9b57718debfaa4bca6b39"},{"fixed":"f9f25118faa4dd2b6e3d14a03d123bbdbd59925d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53338.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.18.36"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.13"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53338.json"}}],"schema_version":"1.7.5"}