CVE-2021-47576 (GCVE-0-2021-47576)
Vulnerability from cvelistv5 – Published: 2024-06-19 14:53 – Updated: 2026-08-05 08:48
VLAI
EPSS
VEX
Title
scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()
In resp_mode_select() sanity check the block descriptor len to avoid UAF.
BUG: KASAN: use-after-free in resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509
Read of size 1 at addr ffff888026670f50 by task scsicmd/15032
CPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0-01d0625 #15
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
Call Trace:
<TASK>
dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107
print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:257
kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443
__asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306
resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509
schedule_resp+0x4af/0x1a10 drivers/scsi/scsi_debug.c:5483
scsi_debug_queuecommand+0x8c9/0x1e70 drivers/scsi/scsi_debug.c:7537
scsi_queue_rq+0x16b4/0x2d10 drivers/scsi/scsi_lib.c:1521
blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1640
__blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1762
__blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839
blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891
blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474
blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:63
sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:837
sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:775
sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:941
sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1166
__x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52
do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:50
entry_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:12 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
231839102b54512ced7d3ee7fc9b8bcf5e3b583b , < adcecd50da6cab7b4957cba0606771dcc846c5a9
(git)
Affected: 231839102b54512ced7d3ee7fc9b8bcf5e3b583b , < 90491283b4064220682e4b0687d07b05df01e3bf (git) Affected: 231839102b54512ced7d3ee7fc9b8bcf5e3b583b , < 04181973c38f3d6a353f9246dcf7fee08024fd9e (git) Affected: 231839102b54512ced7d3ee7fc9b8bcf5e3b583b , < b847ecff850719c46c95acd25a0d555dfd16e10d (git) Affected: 231839102b54512ced7d3ee7fc9b8bcf5e3b583b , < a9078e791426c2cbbdf28a320c3670f6e0a611e6 (git) Affected: 231839102b54512ced7d3ee7fc9b8bcf5e3b583b , < dfc3fff63793c571147930b13c0f8c689c4281ac (git) Affected: 231839102b54512ced7d3ee7fc9b8bcf5e3b583b , < e0a2c28da11e2c2b963fc01d50acbf03045ac732 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.19
Unaffected: 0 , < 2.6.19 (semver) Unaffected: 4.9.294 , ≤ 4.9.* (semver) Unaffected: 4.14.259 , ≤ 4.14.* (semver) Unaffected: 4.19.222 , ≤ 4.19.* (semver) Unaffected: 5.4.168 , ≤ 5.4.* (semver) Unaffected: 5.10.88 , ≤ 5.10.* (semver) Unaffected: 5.15.11 , ≤ 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\\nscsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()\\n\\nIn resp_mode_select() sanity check the block descriptor len to avoid UAF.\\n\\nBUG: KASAN: use-after-free in resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509\\nRead of size 1 at addr ffff888026670f50 by task scsicmd/15032\\n\\nCPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0-01d0625 #15\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107\\n print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:257\\n kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443\\n __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306\\n resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509\\n schedule_resp+0x4af/0x1a10 drivers/scsi/scsi_debug.c:5483\\n scsi_debug_queuecommand+0x8c9/0x1e70 drivers/scsi/scsi_debug.c:7537\\n scsi_queue_rq+0x16b4/0x2d10 drivers/scsi/scsi_lib.c:1521\\n blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1640\\n __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325\\n blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358\\n __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1762\\n __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839\\n blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891\\n blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474\\n blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:63\\n sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:837\\n sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:775\\n sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:941\\n sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1166\\n __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52\\n do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:50\\n entry_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: scsi_debug: Verifique la longitud del descriptor del bloque en resp_mode_select() En resp_mode_select(), verifique la longitud del descriptor del bloque para evitar UAF. ERROR: KASAN: use-after-free en resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509 Lectura del tama\\u00f1o 1 en la direcci\\u00f3n ffff888026670f50 por tarea scsicmd/15032 CPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0 -01d0625 #15 Nombre del hardware: PC est\\u00e1ndar QEMU (i440FX + PIIX, 1996), seguimiento de llamadas del BIOS: dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107 print_address_description.constprop.9+0x28/0x160 mm/kasan/ report.c:257 kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306 resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c: 2509 Schedule_resp+0x4af/0x1a10 controladores/scsi/scsi_debug.c:5483 scsi_debug_queuecommand+0x8c9/0x1e70 controladores/scsi/scsi_debug.c:7537 scsi_queue_rq+0x16b4/0x2d10 controladores/scsi/scsi_lib.c:1521 blk_mq_dispatch_rq_list+0xb9b/0x2700 bloque/ blk-mq.c:1640 __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325 blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358 __blk_mq_run_hw_queue+0xe5/ 0x150 cuadra/blk-mq. c:1762 __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839 blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891 blk_mq_sched_insert_request+0x3db/0x4e0 ched.c:474 blk_execute_rq_nowait+0x16b /0x1c0 block/blk-exec.c:63 sg_common_write.isra.18+0xeb3/0x2000 controladores/scsi/sg.c:837 sg_new_write.isra.19+0x570/0x8c0 controladores/scsi/sg.c:775 sg_ioctl_common+0x14d6 /0x2710 controladores/scsi/sg.c:941 sg_ioctl+0xa2/0x180 controladores/scsi/sg.c:1166 __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52 do_syscall_64+0x3a/0x80 arch/x86/entry/common. c:50 entrada_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113\"}]",
"id": "CVE-2021-47576",
"lastModified": "2024-11-21T06:36:35.137",
"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:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
"published": "2024-06-19T15:15:52.117",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/04181973c38f3d6a353f9246dcf7fee08024fd9e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/90491283b4064220682e4b0687d07b05df01e3bf\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a9078e791426c2cbbdf28a320c3670f6e0a611e6\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/adcecd50da6cab7b4957cba0606771dcc846c5a9\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b847ecff850719c46c95acd25a0d555dfd16e10d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dfc3fff63793c571147930b13c0f8c689c4281ac\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e0a2c28da11e2c2b963fc01d50acbf03045ac732\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/04181973c38f3d6a353f9246dcf7fee08024fd9e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/90491283b4064220682e4b0687d07b05df01e3bf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a9078e791426c2cbbdf28a320c3670f6e0a611e6\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/adcecd50da6cab7b4957cba0606771dcc846c5a9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b847ecff850719c46c95acd25a0d555dfd16e10d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dfc3fff63793c571147930b13c0f8c689c4281ac\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e0a2c28da11e2c2b963fc01d50acbf03045ac732\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2021-47576\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-19T15:15:52.117\",\"lastModified\":\"2026-08-04T10:17:09.170\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()\\n\\nIn resp_mode_select() sanity check the block descriptor len to avoid UAF.\\n\\nBUG: KASAN: use-after-free in resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509\\nRead of size 1 at addr ffff888026670f50 by task scsicmd/15032\\n\\nCPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0-01d0625 #15\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107\\n print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:257\\n kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443\\n __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306\\n resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509\\n schedule_resp+0x4af/0x1a10 drivers/scsi/scsi_debug.c:5483\\n scsi_debug_queuecommand+0x8c9/0x1e70 drivers/scsi/scsi_debug.c:7537\\n scsi_queue_rq+0x16b4/0x2d10 drivers/scsi/scsi_lib.c:1521\\n blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1640\\n __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325\\n blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358\\n __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1762\\n __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839\\n blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891\\n blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474\\n blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:63\\n sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:837\\n sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:775\\n sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:941\\n sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1166\\n __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52\\n do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:50\\n entry_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: scsi_debug: Verifique la longitud del descriptor del bloque en resp_mode_select() En resp_mode_select(), verifique la longitud del descriptor del bloque para evitar UAF. ERROR: KASAN: use-after-free en resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509 Lectura del tama\u00f1o 1 en la direcci\u00f3n ffff888026670f50 por tarea scsicmd/15032 CPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0 -01d0625 #15 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), seguimiento de llamadas del BIOS: dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107 print_address_description.constprop.9+0x28/0x160 mm/kasan/ report.c:257 kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306 resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c: 2509 Schedule_resp+0x4af/0x1a10 controladores/scsi/scsi_debug.c:5483 scsi_debug_queuecommand+0x8c9/0x1e70 controladores/scsi/scsi_debug.c:7537 scsi_queue_rq+0x16b4/0x2d10 controladores/scsi/scsi_lib.c:1521 blk_mq_dispatch_rq_list+0xb9b/0x2700 bloque/ blk-mq.c:1640 __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325 blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358 __blk_mq_run_hw_queue+0xe5/ 0x150 cuadra/blk-mq. c:1762 __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839 blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891 blk_mq_sched_insert_request+0x3db/0x4e0 ched.c:474 blk_execute_rq_nowait+0x16b /0x1c0 block/blk-exec.c:63 sg_common_write.isra.18+0xeb3/0x2000 controladores/scsi/sg.c:837 sg_new_write.isra.19+0x570/0x8c0 controladores/scsi/sg.c:775 sg_ioctl_common+0x14d6 /0x2710 controladores/scsi/sg.c:941 sg_ioctl+0xa2/0x180 controladores/scsi/sg.c:1166 __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52 do_syscall_64+0x3a/0x80 arch/x86/entry/common. c:50 entrada_SYSCALL_64_after_hwframe+0x44/0xae 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"current_release_date": "2026-08-06T22:22:01+00:00",
"cve": "CVE-2021-47576",
"id": "CVE-2021-47576",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_affected": "92",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47576.json",
"version": "3"
},
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"current_release_date": "2026-09-09T00:38:19Z",
"cve": "CVE-2021-47576",
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"initial_release_date": "2024-06-21T03:52:39Z",
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"product_status:known_not_affected": "69",
"product_status:recommended": "552",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-47576",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47576.json",
"version": "69"
},
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drivers/scsi/scsi_lib.c:1521\\n blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1640\\n __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325\\n blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358\\n __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1762\\n __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839\\n blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891\\n blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474\\n blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:63\\n sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:837\\n sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:775\\n sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:941\\n sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1166\\n __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52\\n do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:50\\n entry_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.294\", \"versionStartIncluding\": \"2.6.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.259\", \"versionStartIncluding\": \"2.6.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.222\", \"versionStartIncluding\": \"2.6.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.168\", \"versionStartIncluding\": \"2.6.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.88\", \"versionStartIncluding\": \"2.6.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.11\", \"versionStartIncluding\": \"2.6.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\", \"versionStartIncluding\": \"2.6.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:48:26.375Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2021-47576\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:48:26.375Z\", \"dateReserved\": \"2024-05-24T15:11:00.730Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T14:53:44.725Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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