CVE-2022-49928

{"id": "CVE-2022-49928", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "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}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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": "2025-05-01T15:16:18.783", "references": [{"url": "https://git.kernel.org/stable/c/7b189b0aa8dab14b49c31c65af8a982e96e25b62", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cbdeaee94a415800c65a8c3fa04d9664a8b8fb3a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d59722d088a9d86ce6d9d39979e5d1d669d249f7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-476"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: Fix null-ptr-deref when xps sysfs alloc failed\n\nThere is a null-ptr-deref when xps sysfs alloc failed:\n BUG: KASAN: null-ptr-deref in sysfs_do_create_link_sd+0x40/0xd0\n Read of size 8 at addr 0000000000000030 by task gssproxy/457\n\n CPU: 5 PID: 457 Comm: gssproxy Not tainted 6.0.0-09040-g02357b27ee03 #9\n Call Trace:\n <TASK>\n dump_stack_lvl+0x34/0x44\n kasan_report+0xa3/0x120\n sysfs_do_create_link_sd+0x40/0xd0\n rpc_sysfs_client_setup+0x161/0x1b0\n rpc_new_client+0x3fc/0x6e0\n rpc_create_xprt+0x71/0x220\n rpc_create+0x1d4/0x350\n gssp_rpc_create+0xc3/0x160\n set_gssp_clnt+0xbc/0x140\n write_gssp+0x116/0x1a0\n proc_reg_write+0xd6/0x130\n vfs_write+0x177/0x690\n ksys_write+0xb9/0x150\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen the xprt_switch sysfs alloc failed, should not add xprt and\nswitch sysfs to it, otherwise, maybe null-ptr-deref; also initialize\nthe 'xps_sysfs' to NULL to avoid oops when destroy it."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: SUNRPC: Se corrige null-ptr-deref cuando falla la asignaci\u00f3n de sysfs en XPS. Hay un null-ptr-deref cuando falla la asignaci\u00f3n de sysfs en XPS: ERROR: KASAN: null-ptr-deref en sysfs_do_create_link_sd+0x40/0xd0 Lectura de tama\u00f1o 8 en la direcci\u00f3n 0000000000000030 por la tarea gssproxy/457 CPU: 5 PID: 457 Comm: gssproxy No contaminado 6.0.0-09040-g02357b27ee03 #9 Rastreo de llamadas: dump_stack_lvl+0x34/0x44 kasan_report+0xa3/0x120 sysfs_do_create_link_sd+0x40/0xd0 rpc_sysfs_client_setup+0x161/0x1b0 rpc_new_client+0x3fc/0x6e0 rpc_create_xprt+0x71/0x220 rpc_create+0x1d4/0x350 gssp_rpc_create+0xc3/0x160 set_gssp_clnt+0xbc/0x140 write_gssp+0x116/0x1a0 proc_reg_write+0xd6/0x130 vfs_write+0x177/0x690 ksys_write+0xb9/0x150 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Cuando la asignaci\u00f3n sysfs xprt_switch falla, no se debe agregar xprt y switch sysfs a \u00e9l, de lo contrario, tal vez null-ptr-deref; tambi\u00e9n inicialice 'xps_sysfs' a NULL para evitar errores al destruirlo."}], "lastModified": "2025-10-01T15:15:39.270", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4A83CCE5-725E-495E-A0C2-C673EA7B658A", "versionEndExcluding": "5.15.78", "versionStartIncluding": "5.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC9A754E-625D-42F3-87A7-960D643E2867", "versionEndExcluding": "6.0.8", "versionStartIncluding": "5.16"}, {"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"}