CVE-2025-71075

// PoC concept for CVE-2025-71075 // Note: This is a conceptual demonstration, actual exploitation requires specific hardware #include <linux/module.h> #include <linux/pci.h> MODULE_LICENSE("GPL"); static int trigger_race_condition(struct pci_dev *dev) { // Trigger device removal while tasklets are pending // This would require specific aic94xx hardware // Step 1: Ensure aic94xx device is present and initialized if (!dev || dev->vendor != PCI_VENDOR_ID_ADAPTEC2) return -ENODEV; // Step 2: Trigger I/O operations to queue tasklets // This increases the likelihood of pending tasklets // Step 3: Immediately trigger device removal // Use hotplug or module unload to trigger asd_pci_remove() // Race condition window: // asd_pci_remove() frees asd_ha while tasklets may still access it return 0; } static int __init poc_init(void) { printk(KERN_INFO "CVE-2025-71075 PoC loaded\n"); return 0; } static void __exit poc_exit(void) { printk(KERN_INFO "CVE-2025-71075 PoC unloaded\n"); } module_init(poc_init); module_exit(poc_exit);

{"cve": {"id": "CVE-2025-71075", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-01-13T16:16:06.977", "lastModified": "2026-03-25T19:03:18.287", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: aic94xx: fix use-after-free in device removal path\n\nThe asd_pci_remove() function fails to synchronize with pending tasklets\nbefore freeing the asd_ha structure, leading to a potential\nuse-after-free vulnerability.\n\nWhen a device removal is triggered (via hot-unplug or module unload),\nrace condition can occur.\n\nThe fix adds tasklet_kill() before freeing the asd_ha structure,\nensuring all scheduled tasklets complete before cleanup proceeds."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: aic94xx: corrección de uso después de liberación en la ruta de eliminación de dispositivo\n\nLa función asd_pci_remove() no logra sincronizarse con los tasklets pendientes antes de liberar la estructura asd_ha, lo que lleva a una potencial vulnerabilidad de uso después de liberación.\n\nCuando se activa la eliminación de un dispositivo (mediante desconexión en caliente o descarga de módulo), puede ocurrir una condición de carrera.\n\nLa corrección añade tasklet_kill() antes de liberar la estructura asd_ha, asegurando que todos los tasklets programados se completen antes de que continúe la limpieza."}], "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-416"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19.1", "versionEndExcluding": "5.10.248", "matchCriteriaId": "7E772C9A-7711-46F7-9317-F8DB2A0C93F1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.198", "matchCriteriaId": "82159CAA-B6BA-43C6-85D8-65BDBC175A7E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.160", "matchCriteriaId": "C10CC03E-16A9-428A-B449-40D3763E15F6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.120", "matchCriteriaId": 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"https://git.kernel.org/stable/c/751c19635c2bfaaf2836a533caa3663633 ... 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