CVE-2021-47100 (GCVE-0-2021-47100)
Vulnerability from cvelistv5 – Published: 2024-03-04 18:10 – Updated: 2026-05-11 13:48
VLAI
EPSS
VEX
Title
ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module
Summary
In the Linux kernel, the following vulnerability has been resolved:
ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module
Hi,
When testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,
the system crashed.
The log as follows:
[ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a
[ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0
[ 141.087464] Oops: 0010 [#1] SMP NOPTI
[ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47
[ 141.088009] Workqueue: events 0xffffffffc09b3a40
[ 141.088009] RIP: 0010:0xffffffffc09b3a5a
[ 141.088009] Code: Bad RIP value.
[ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246
[ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000
[ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246
[ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1
[ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700
[ 141.088009] R13: 0000000000000000 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: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 141.088009] PKRU: 55555554
[ 141.088009] Call Trace:
[ 141.088009] ? process_one_work+0x195/0x390
[ 141.088009] ? worker_thread+0x30/0x390
[ 141.088009] ? process_one_work+0x390/0x390
[ 141.088009] ? kthread+0x10d/0x130
[ 141.088009] ? kthread_flush_work_fn+0x10/0x10
[ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a
[ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0
[ 200.223464] Oops: 0010 [#1] SMP NOPTI
[ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46
[ 200.224008] Workqueue: events 0xffffffffc0b28a40
[ 200.224008] RIP: 0010:0xffffffffc0b28a5a
[ 200.224008] Code: Bad RIP value.
[ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246
[ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000
[ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246
[ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5
[ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700
[ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8
[ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000
[ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0
[ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 200.224008] PKRU: 55555554
[ 200.224008] Call Trace:
[ 200.224008] ? process_one_work+0x195/0x390
[ 200.224008] ? worker_thread+0x30/0x390
[ 200.224008] ? process_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] kernel fault(0x1) notification starting on CPU 63
[ 200.224008] kernel fault(0x1) notification finished on CPU 63
[ 200.224008] CR2: ffffffffc0b28a5a
[ 200.224008] ---[ end trace c82a412d93f57412 ]---
The reason is as follows:
T1: rmmod ipmi_si.
->ipmi_unregister_smi()
-> ipmi_bmc_unregister()
-> __ipmi_bmc_unregister()
-> kref_put(&bmc->usecount, cleanup_bmc_device);
-> schedule_work(&bmc->remove_work);
T2: rmmod ipmi_msghandl
---truncated---
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-26 20:38 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
b2cfd8ab4add53c2070367bfee2f5b738f51698d , < 925229d552724e1bba1abf01d3a0b1318539b012
(git)
Affected: b2cfd8ab4add53c2070367bfee2f5b738f51698d , < 992649b8b16843d27eb39ceea5f9cf85ffb50a18 (git) Affected: b2cfd8ab4add53c2070367bfee2f5b738f51698d , < 6809da5185141e61401da5b01896b79a4deed1ad (git) Affected: b2cfd8ab4add53c2070367bfee2f5b738f51698d , < 6b3f7e4b10f343f05b5fb513b07a9168fbf1172e (git) Affected: b2cfd8ab4add53c2070367bfee2f5b738f51698d , < ffb76a86f8096a8206be03b14adda6092e18e275 (git) |
guessed | |
| Linux | Linux |
Affected:
4.15
Unaffected: 0 , < 4.15 (semver) Unaffected: 4.19.223 , ≤ 4.19.* (semver) Unaffected: 5.4.169 , ≤ 5.4.* (semver) Unaffected: 5.10.89 , ≤ 5.10.* (semver) Unaffected: 5.15.12 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix) |
guessed |
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"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 -\u003eipmi_unregister_smi()\n -\u003e ipmi_bmc_unregister()\n -\u003e __ipmi_bmc_unregister()\n -\u003e kref_put(\u0026bmc-\u003eusecount, cleanup_bmc_device);\n -\u003e schedule_work(\u0026bmc-\u003eremove_work);\n\nT2: rmmod ipmi_msghandl\n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T13:48:03.873Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012"
},
{
"url": "https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18"
},
{
"url": "https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad"
},
{
"url": "https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e"
},
{
"url": "https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275"
}
],
"title": "ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2021-47100",
"datePublished": "2024-03-04T18:10:52.602Z",
"dateReserved": "2024-02-29T22:33:44.301Z",
"dateUpdated": "2026-05-11T13:48:03.873Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-47100",
"date": "2026-09-16",
"epss": "0.00241",
"percentile": "0.15366"
},
"fkie_nvd": {
"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 -\u003eipmi_unregister_smi()\\n -\u003e ipmi_bmc_unregister()\\n -\u003e __ipmi_bmc_unregister()\\n -\u003e kref_put(\u0026bmc-\u003eusecount, cleanup_bmc_device);\\n -\u003e schedule_work(\u0026bmc-\u003eremove_work);\\n\\nT2: rmmod ipmi_msghandl\\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: ipmi: corrige UAF al desinstalar los m\\u00f3dulos ipmi_si e ipmi_msghandler Hola. Al probar la instalaci\\u00f3n y desinstalaci\\u00f3n de ipmi_si.ko e ipmi_msghandler.ko, el sistema fall\\u00f3. El registro es el siguiente: [141.087026] ERROR: no se puede manejar la solicitud de paginaci\\u00f3n 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] C\\u00f3digo: 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 paginaci\\u00f3n 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] C\\u00f3digo: 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] Notificaci\\u00f3n de falla del kernel (0x1) que comienza en la CPU 63 [200.224008] Notificaci\\u00f3n 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. -\u0026gt;ipmi_unregister_smi() -\u0026gt; ipmi_bmc_unregister() -\u0026gt; __ipmi_bmc_unregister() -\u0026gt; kref_put(\u0026amp;bmc-\u0026gt;usecount, cleanup_bmc_device); -\u0026gt; programar_trabajo(\u0026amp;bmc-\u0026gt;remove_work); T2: rmmod ipmi_msghandl\"}]",
"id": "CVE-2021-47100",
"lastModified": "2024-11-21T06:35:23.917",
"published": "2024-03-04T18:15:08.267",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2021-47100\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-04T18:15:08.267\",\"lastModified\":\"2026-06-17T04:16:28.860\",\"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 -\u003eipmi_unregister_smi()\\n -\u003e ipmi_bmc_unregister()\\n -\u003e __ipmi_bmc_unregister()\\n -\u003e kref_put(\u0026bmc-\u003eusecount, cleanup_bmc_device);\\n -\u003e schedule_work(\u0026bmc-\u003eremove_work);\\n\\nT2: rmmod ipmi_msghandl\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipmi: corrige UAF al desinstalar los m\u00f3dulos ipmi_si e ipmi_msghandler Hola. Al probar la instalaci\u00f3n y desinstalaci\u00f3n de ipmi_si.ko e ipmi_msghandler.ko, el sistema fall\u00f3. El registro es el siguiente: [141.087026] ERROR: no se puede manejar la solicitud de paginaci\u00f3n 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] C\u00f3digo: 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 paginaci\u00f3n 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] C\u00f3digo: 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] Notificaci\u00f3n de falla del kernel (0x1) que comienza en la CPU 63 [200.224008] Notificaci\u00f3n 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. -\u0026gt;ipmi_unregister_smi() -\u0026gt; ipmi_bmc_unregister() -\u0026gt; __ipmi_bmc_unregister() -\u0026gt; kref_put(\u0026amp;bmc-\u0026gt;usecount, cleanup_bmc_device); -\u0026gt; programar_trabajo(\u0026amp;bmc-\u0026gt;remove_work); T2: rmmod ipmi_msghandl\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/char/ipmi/ipmi_msghandler.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b2cfd8ab4add53c2070367bfee2f5b738f51698d\",\"lessThan\":\"925229d552724e1bba1abf01d3a0b1318539b012\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b2cfd8ab4add53c2070367bfee2f5b738f51698d\",\"lessThan\":\"992649b8b16843d27eb39ceea5f9cf85ffb50a18\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b2cfd8ab4add53c2070367bfee2f5b738f51698d\",\"lessThan\":\"6809da5185141e61401da5b01896b79a4deed1ad\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b2cfd8ab4add53c2070367bfee2f5b738f51698d\",\"lessThan\":\"6b3f7e4b10f343f05b5fb513b07a9168fbf1172e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b2cfd8ab4add53c2070367bfee2f5b738f51698d\",\"lessThan\":\"ffb76a86f8096a8206be03b14adda6092e18e275\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/char/ipmi/ipmi_msghandler.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.223\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.169\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.89\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.12\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-26T20:38:38.889138Z\",\"id\":\"CVE-2021-47100\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T13:54:15+00:00",
"cve": "CVE-2021-47100",
"id": "CVE-2021-47100",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47100.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T02:40:29Z",
"cve": "CVE-2021-47100",
"id": "CVE-2021-47100",
"initial_release_date": "2024-03-06T04:52:27Z",
"product_status:known_affected": "317",
"product_status:known_not_affected": "182",
"product_status:recommended": "632",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-47100",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47100.json",
"version": "69"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:24:39.796Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47100\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-26T20:38:38.889138Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-26T20:38:44.175Z\"}}], \"cna\": {\"title\": \"ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b2cfd8ab4add53c2070367bfee2f5b738f51698d\", \"lessThan\": \"925229d552724e1bba1abf01d3a0b1318539b012\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2cfd8ab4add53c2070367bfee2f5b738f51698d\", \"lessThan\": \"992649b8b16843d27eb39ceea5f9cf85ffb50a18\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2cfd8ab4add53c2070367bfee2f5b738f51698d\", \"lessThan\": \"6809da5185141e61401da5b01896b79a4deed1ad\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2cfd8ab4add53c2070367bfee2f5b738f51698d\", \"lessThan\": \"6b3f7e4b10f343f05b5fb513b07a9168fbf1172e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b2cfd8ab4add53c2070367bfee2f5b738f51698d\", \"lessThan\": \"ffb76a86f8096a8206be03b14adda6092e18e275\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/char/ipmi/ipmi_msghandler.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.223\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.169\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.89\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/char/ipmi/ipmi_msghandler.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012\"}, {\"url\": \"https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18\"}, {\"url\": \"https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad\"}, {\"url\": \"https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e\"}, {\"url\": \"https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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 -\u003eipmi_unregister_smi()\\n -\u003e ipmi_bmc_unregister()\\n -\u003e __ipmi_bmc_unregister()\\n -\u003e kref_put(\u0026bmc-\u003eusecount, cleanup_bmc_device);\\n -\u003e schedule_work(\u0026bmc-\u003eremove_work);\\n\\nT2: rmmod ipmi_msghandl\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.223\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.169\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.89\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.12\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\", \"versionStartIncluding\": \"4.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:04:10.477Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2021-47100\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:04:10.477Z\", \"dateReserved\": \"2024-02-29T22:33:44.301Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-04T18:10:52.602Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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