{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-20T19:30:54.223","vulnerabilities":[{"cve":{"id":"CVE-2021-47100","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-03-04T18:15:08.267","lastModified":"2025-02-03T13:51:24.110","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module\n\nHi,\n\nWhen testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,\nthe system crashed.\n\nThe log as follows:\n[  141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a\n[  141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0\n[  141.087464] Oops: 0010 [#1] SMP NOPTI\n[  141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47\n[  141.088009] Workqueue: events 0xffffffffc09b3a40\n[  141.088009] RIP: 0010:0xffffffffc09b3a5a\n[  141.088009] Code: Bad RIP value.\n[  141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246\n[  141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000\n[  141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[  141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1\n[  141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700\n[  141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8\n[  141.088009] FS:  0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000\n[  141.088009] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0\n[  141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[  141.088009] PKRU: 55555554\n[  141.088009] Call Trace:\n[  141.088009]  ? process_one_work+0x195/0x390\n[  141.088009]  ? worker_thread+0x30/0x390\n[  141.088009]  ? process_one_work+0x390/0x390\n[  141.088009]  ? kthread+0x10d/0x130\n[  141.088009]  ? kthread_flush_work_fn+0x10/0x10\n[  141.088009]  ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a\n[  200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0\n[  200.223464] Oops: 0010 [#1] SMP NOPTI\n[  200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46\n[  200.224008] Workqueue: events 0xffffffffc0b28a40\n[  200.224008] RIP: 0010:0xffffffffc0b28a5a\n[  200.224008] Code: Bad RIP value.\n[  200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246\n[  200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000\n[  200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[  200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5\n[  200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700\n[  200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8\n[  200.224008] FS:  0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000\n[  200.224008] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0\n[  200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[  200.224008] PKRU: 55555554\n[  200.224008] Call Trace:\n[  200.224008]  ? process_one_work+0x195/0x390\n[  200.224008]  ? worker_thread+0x30/0x390\n[  200.224008]  ? process_one_work+0x390/0x390\n[  200.224008]  ? kthread+0x10d/0x130\n[  200.224008]  ? kthread_flush_work_fn+0x10/0x10\n[  200.224008]  ? ret_from_fork+0x35/0x40\n[  200.224008] kernel fault(0x1) notification starting on CPU 63\n[  200.224008] kernel fault(0x1) notification finished on CPU 63\n[  200.224008] CR2: ffffffffc0b28a5a\n[  200.224008] ---[ end trace c82a412d93f57412 ]---\n\nThe reason is as follows:\nT1: rmmod ipmi_si.\n    ->ipmi_unregister_smi()\n        -> ipmi_bmc_unregister()\n            -> __ipmi_bmc_unregister()\n                -> kref_put(&bmc->usecount, cleanup_bmc_device);\n                    -> schedule_work(&bmc->remove_work);\n\nT2: rmmod ipmi_msghandl\n---truncated---"},{"lang":"es","value":"En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ipmi: corrige UAF al desinstalar los módulos ipmi_si e ipmi_msghandler Hola. Al probar la instalación y desinstalación de ipmi_si.ko e ipmi_msghandler.ko, el sistema falló. El registro es el siguiente: [141.087026] ERROR: no se puede manejar la solicitud de paginación del kernel en ffffffffc09b3a5a [141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0 [141.087464] Vaya s: 0010 [#1] SMP NOPTI [ 141.087580] CPU: 67 PID : 668 Comm: kworker/67:1 Kdump: cargado No contaminado 4.18.0.x86_64 #47 [ 141.088009] Cola de trabajo: eventos 0xffffffffc09b3a40 [ 141.088009] RIP: 0010:0xffffffffc09b3a5a [ 141.088009] Código: Valor RIP incorrecto. [ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246 [ 141.088009] RAX: 00000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000 [ 14 1.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 [ 141.088009] RBP: 000000000000000000 R08: ffff9abfffee3cb8 R09: 00 000000000002e1 [141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700 [ 141.088009] R13: 00000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8 [ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000 [ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0 [ 141.088009] DR0: 00000000000000 00 DR1: 0000000000000000 DR2: 00000000000000000 [ 141.088009] DR3: 0000000000000000 DR6: 00000000ffe0ff0 DR7: 0000000000000400 [ 141.088009] PKRU: 55555554 [ 141.088009] Llamar Seguimiento: [141.088009]? proceso_one_work+0x195/0x390 [141.088009]? hilo_trabajador+0x30/0x390 [141.088009]? proceso_one_work+0x390/0x390 [141.088009]? kthread+0x10d/0x130 [141.088009]? kthread_flush_work_fn+0x10/0x10 [141.088009]? ret_from_fork+0x35/0x40] ERROR: no se puede manejar la solicitud de paginación del kernel en ffffffffc0b28a5a [200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0 [200.223464] Vaya : 0010 [#1] SMP NOPTI [ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: cargado No contaminado 4.18.0.x86_64 #46 [200.224008] Cola de trabajo: eventos 0xffffffffc0b28a40 [200.224008] RIP: 0010:0xffffffffc0b28a5a [200.224008] Código: RIP incorrecto valor. [ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246 [ 200.224008] RAX: 00000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000 [ 200 .224008] RDX: 0000000000000000 RSI: 00000000000000246 RDI: 0000000000000246 [ 200.224008] RBP: 00000000000000000 R08: ffff9fe43fde3cb8 R09: 00 000000000000d5 [200.224008] R10: fffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700 [ 200.224008] R13: 00000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8 [ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:00000000000000000 [ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0 [ 200.224008] DR0: 00000000000000 00 DR1: 0000000000000000 DR2: 00000000000000000 [ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 200.224008] PKRU: 55555554 [ 200.224008] Llamar Seguimiento: [200.224008] ? proceso_one_work+0x195/0x390 [200.224008]? hilo_trabajador+0x30/0x390 [200.224008]? proceso_one_work+0x390/0x390 [200.224008]? kthread+0x10d/0x130 [200.224008]? kthread_flush_work_fn+0x10/0x10 [200.224008]? ret_from_fork+0x35/0x40 [200.224008] Notificación de falla del kernel (0x1) que comienza en la CPU 63 [200.224008] Notificación de falla del kernel (0x1) finalizada en la CPU 63 [200.224008] CR2: ffffffffc0b28a5a [200.224008] ---[ end trace c82a41 2d93f57412 ]-- - El motivo es el siguiente: T1: rmmod ipmi_si. ->ipmi_unregister_smi() -> ipmi_bmc_unregister() -> __ipmi_bmc_unregister() -> kref_put(&bmc->usecount, cleanup_bmc_device); -> programar_trabajo(&bmc->remove_work); T2: rmmod ipmi_msghandl"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","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":"nvd@nist.gov","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":"4.15","versionEndExcluding":"4.19.223","matchCriteriaId":"5C88C05D-FA25-4086-A781-7092BAF56D64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.169","matchCriteriaId":"BDD2EE60-3484-4845-AC26-6AB31C278192"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.89","matchCriteriaId":"2A2152BA-053D-4847-B29B-68F543546AB3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.12","matchCriteriaId":"732BA914-7B3B-43CD-857F-8119106F6F71"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*","matchCriteriaId":"357AA433-37E8-4323-BFB2-3038D6E4B414"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*","matchCriteriaId":"A73429BA-C2D9-4D0C-A75F-06A1CA8B3983"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*","matchCriteriaId":"F621B5E3-E99D-49E7-90B9-EC3B77C95383"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:*","matchCriteriaId":"F7BFDCAA-1650-49AA-8462-407DD593F94F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:*","matchCriteriaId":"6EC9882F-866D-4ACB-8FBC-213D8D8436C8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:*","matchCriteriaId":"8A0915FE-A4AA-4C94-B783-CF29D81E7E54"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}