CVE-2022-49930

{"id": "CVE-2022-49930", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-05-01T15:16:18.983", "references": [{"url": "https://git.kernel.org/stable/c/0e23e85d86b78e734dd6654f1b69fbaeb5534c81", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/12bcaf87d8b66d8cd812479c8a6349dcb245375c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix NULL pointer problem in free_mr_init()\n\nLock grab occurs in a concurrent scenario, resulting in stepping on a NULL\npointer. It should be init mutex_init() first before use the lock.\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n Call trace:\n __mutex_lock.constprop.0+0xd0/0x5c0\n __mutex_lock_slowpath+0x1c/0x2c\n mutex_lock+0x44/0x50\n free_mr_send_cmd_to_hw+0x7c/0x1c0 [hns_roce_hw_v2]\n hns_roce_v2_dereg_mr+0x30/0x40 [hns_roce_hw_v2]\n hns_roce_dereg_mr+0x4c/0x130 [hns_roce_hw_v2]\n ib_dereg_mr_user+0x54/0x124\n uverbs_free_mr+0x24/0x30\n destroy_hw_idr_uobject+0x38/0x74\n uverbs_destroy_uobject+0x48/0x1c4\n uobj_destroy+0x74/0xcc\n ib_uverbs_cmd_verbs+0x368/0xbb0\n ib_uverbs_ioctl+0xec/0x1a4\n __arm64_sys_ioctl+0xb4/0x100\n invoke_syscall+0x50/0x120\n el0_svc_common.constprop.0+0x58/0x190\n do_el0_svc+0x30/0x90\n el0_svc+0x2c/0xb4\n el0t_64_sync_handler+0x1a4/0x1b0\n el0t_64_sync+0x19c/0x1a0"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/hns: Se solucion\u00f3 el problema del puntero nulo en free_mr_init(). La captura de bloqueo ocurre en un escenario concurrente, lo que resulta en la sobreexposici\u00f3n a un puntero nulo. Se debe inicializar mutex_init() antes de usar el bloqueo. No se puede gestionar la desreferencia del puntero NULL del n\u00facleo en la direcci\u00f3n virtual 0000000000000000 Rastreo de llamadas: __mutex_lock.constprop.0+0xd0/0x5c0 __mutex_lock_slowpath+0x1c/0x2c mutex_lock+0x44/0x50 free_mr_send_cmd_to_hw+0x7c/0x1c0 [hns_roce_hw_v2] hns_roce_v2_dereg_mr+0x30/0x40 [hns_roce_hw_v2] hns_roce_dereg_mr+0x4c/0x130 [hns_roce_hw_v2] ib_dereg_mr_user+0x54/0x124 uverbs_free_mr+0x24/0x30 destroy_hw_idr_uobject+0x38/0x74 uverbs_destroy_uobject+0x48/0x1c4 uobj_destroy+0x74/0xcc ib_uverbs_cmd_verbs+0x368/0xbb0 ib_uverbs_ioctl+0xec/0x1a4 __arm64_sys_ioctl+0xb4/0x100 invoke_syscall+0x50/0x120 el0_svc_common.constprop.0+0x58/0x190 do_el0_svc+0x30/0x90 el0_svc+0x2c/0xb4 el0t_64_sync_handler+0x1a4/0x1b0 el0t_64_sync+0x19c/0x1a0 "}], "lastModified": "2025-05-07T13:28:51.413", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1A7CC21A-D6B9-425E-AEBB-BD23DFDC85EA", "versionEndExcluding": "6.0.8", "versionStartIncluding": "5.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}