CVE-2026-23422

/* * PoC Concept for CVE-2026-23422 * This code demonstrates the vulnerable logic in the IRQ handler. * Triggering this requires sending a frame that results in an out-of-bounds if_id. */ #include <stdio.h> // Simulated hardware register volatile int interrupt_status = 1; // Vulnerable function logic representation void dpaa2_switch_irq_handler_vulnerable(int if_id) { int MAX_IF_ID = 10; // Check introduced in commit 31a7a0bbeb00 if (if_id < 0 || if_id >= MAX_IF_ID) { printf("[VULNERABLE] Out-of-bounds if_id detected: %d\n", if_id); // BUG: Interrupt status is NOT cleared here return; } // Normal processing... printf("Processing if_id: %d\n", if_id); // Clear interrupt status (only reached in normal path) interrupt_status = 0; } int main() { printf("Simulating IRQ with bad if_id...\n"); // Simulate interrupt storm loop int count = 0; while(interrupt_status && count < 10) { dpaa2_switch_irq_handler_vulnerable(999); // Out of bounds ID count++; } if (count >= 10) { printf("Result: Interrupt Storm detected! Status not cleared.\n"); } return 0; }

{"cve": {"id": "CVE-2026-23422", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-04-03T14:16:28.320", "lastModified": "2026-04-24T15:21:10.057", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: Fix interrupt storm after receiving bad if_id in IRQ handler\n\nCommit 31a7a0bbeb00 (\"dpaa2-switch: add bounds check for if_id in IRQ\nhandler\") introduces a range check for if_id to avoid an out-of-bounds\naccess. If an out-of-bounds if_id is detected, the interrupt status is\nnot cleared. This may result in an interrupt storm.\n\nClear the interrupt status after detecting an out-of-bounds if_id to avoid\nthe problem.\n\nFound by an experimental AI code review agent at Google."}], "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:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.200", "versionEndExcluding": "5.15.203", "matchCriteriaId": "63DFD51E-A9F5-4387-ABA4-525154CD3972"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.163", "versionEndExcluding": "6.1.167", "matchCriteriaId": "73CD421D-F2A3-4142-A9A2-47683BB9ABD4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.124", "versionEndExcluding": "6.6.130", "matchCriteriaId": "C1C9B72D-1F0E-488D-AE95-ADE16C092AF0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.70", "versionEndExcluding": "6.12.77", "matchCriteriaId": "15DA5431-2634-4814-9C20-456B79A8EBBF"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.10", "versionEndExcluding": "6.18.17", "matchCriteriaId": "8AAEDCA3-6D4E-4846-979A-3E28B6C95113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.1", "versionEndExcluding": "6.19.7", "matchCriteriaId": "8ACF56ED-6FE0-41DE-BECE-41134CC7BD44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*", "matchCriteriaId": "35C8A871-4971-433E-A046-FC9F7B7D190A"}, {"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/00f42ace446f1e4bf84988f2281131f52cd32796", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/28fd8ac1d49389cb230d712116f54e27ebec11b8", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/74badb9c20b1a9c02a95c735c6d3cd6121679c93", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/7def51cb9fb8b8d5342443372b8cf28d8fbd7f3d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/b5bababe7703a7322bc59b803ab1587887a2a5e4", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/c7becfe3e604d138bd53b8ac3111b2b3e8ec6b0e", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/fa4412cdc5178a48799bafcb8af28fd2fbf3d703", "source": "416baaa9-dc9f-4396-8d5f ... (truncated)