CVE-2026-43102

/* * PoC Concept for CVE-2026-43102 * This snippet demonstrates the logic error in airoha_qdma_rx_process. * Exploitation requires access to an affected system with the airoha driver. */ #include <linux/kernel.h> #include <net/page_pool.h> // Simulated vulnerable function logic void vulnerable_logic(struct page_pool *pool, struct sk_buff *skb, int error) { // ... processing rx buffers ... if (error) { // Error path in non-linear buffer handling // VULNERABILITY: If the fragment was not linked to skb, // page_pool_put_full_page() is not called here. // Fix would be: // if (page) // page_pool_put_full_page(pool, page, true); return; // Memory leak occurs here } } // Note: Actual exploitation involves sending specific network traffic // to trigger the error condition in the driver.

{"cve": {"id": "CVE-2026-43102", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-06T10:16:23.750", "lastModified": "2026-05-11T17:34:42.620", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: Fix memory leak in airoha_qdma_rx_process()\n\nIf an error occurs on the subsequents buffers belonging to the\nnon-linear part of the skb (e.g. due to an error in the payload length\nreported by the NIC or if we consumed all the available fragments for\nthe skb), the page_pool fragment will not be linked to the skb so it will\nnot return to the pool in the airoha_qdma_rx_process() error path. Fix the\nmemory leak partially reverting commit 'd6d2b0e1538d (\"net: airoha: Fix\npage recycling in airoha_qdma_rx_process()\")' and always running\npage_pool_put_full_page routine in the airoha_qdma_rx_process() error\npath."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-401"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15.1", "versionEndExcluding": "6.18.24", "matchCriteriaId": "050491AB-682C-426A-A38E-B956530C4C20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.14", "matchCriteriaId": "D6A8A074-BBF4-4803-ABED-519A839435BB"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.15:-:*:*:*:*:*:*", "matchCriteriaId": "A1ECC65A-EE37-4479-8E99-4BB68A22A31F"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/285fa6b1e03cff78ead0383e1b259c44b95faf90", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/4429b761874fb9c7767d12d98913a467ef2654f1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/7ee0063fbab8aea8f4e4e3165f541bf898b77b80", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}