CVE-2021-47441 (GCVE-0-2021-47441)

Vulnerability from cvelistv5 – Published: 2024-05-22 06:19 – Updated: 2025-05-04 07:10
VLAI?
Title
mlxsw: thermal: Fix out-of-bounds memory accesses
Summary
In the Linux kernel, the following vulnerability has been resolved: mlxsw: thermal: Fix out-of-bounds memory accesses Currently, mlxsw allows cooling states to be set above the maximum cooling state supported by the driver: # cat /sys/class/thermal/thermal_zone2/cdev0/type mlxsw_fan # cat /sys/class/thermal/thermal_zone2/cdev0/max_state 10 # echo 18 > /sys/class/thermal/thermal_zone2/cdev0/cur_state # echo $? 0 This results in out-of-bounds memory accesses when thermal state transition statistics are enabled (CONFIG_THERMAL_STATISTICS=y), as the transition table is accessed with a too large index (state) [1]. According to the thermal maintainer, it is the responsibility of the driver to reject such operations [2]. Therefore, return an error when the state to be set exceeds the maximum cooling state supported by the driver. To avoid dead code, as suggested by the thermal maintainer [3], partially revert commit a421ce088ac8 ("mlxsw: core: Extend cooling device with cooling levels") that tried to interpret these invalid cooling states (above the maximum) in a special way. The cooling levels array is not removed in order to prevent the fans going below 20% PWM, which would cause them to get stuck at 0% PWM. [1] BUG: KASAN: slab-out-of-bounds in thermal_cooling_device_stats_update+0x271/0x290 Read of size 4 at addr ffff8881052f7bf8 by task kworker/0:0/5 CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc3-custom-45935-gce1adf704b14 #122 Hardware name: Mellanox Technologies Ltd. "MSN2410-CB2FO"/"SA000874", BIOS 4.6.5 03/08/2016 Workqueue: events_freezable_power_ thermal_zone_device_check Call Trace: dump_stack_lvl+0x8b/0xb3 print_address_description.constprop.0+0x1f/0x140 kasan_report.cold+0x7f/0x11b thermal_cooling_device_stats_update+0x271/0x290 __thermal_cdev_update+0x15e/0x4e0 thermal_cdev_update+0x9f/0xe0 step_wise_throttle+0x770/0xee0 thermal_zone_device_update+0x3f6/0xdf0 process_one_work+0xa42/0x1770 worker_thread+0x62f/0x13e0 kthread+0x3ee/0x4e0 ret_from_fork+0x1f/0x30 Allocated by task 1: kasan_save_stack+0x1b/0x40 __kasan_kmalloc+0x7c/0x90 thermal_cooling_device_setup_sysfs+0x153/0x2c0 __thermal_cooling_device_register.part.0+0x25b/0x9c0 thermal_cooling_device_register+0xb3/0x100 mlxsw_thermal_init+0x5c5/0x7e0 __mlxsw_core_bus_device_register+0xcb3/0x19c0 mlxsw_core_bus_device_register+0x56/0xb0 mlxsw_pci_probe+0x54f/0x710 local_pci_probe+0xc6/0x170 pci_device_probe+0x2b2/0x4d0 really_probe+0x293/0xd10 __driver_probe_device+0x2af/0x440 driver_probe_device+0x51/0x1e0 __driver_attach+0x21b/0x530 bus_for_each_dev+0x14c/0x1d0 bus_add_driver+0x3ac/0x650 driver_register+0x241/0x3d0 mlxsw_sp_module_init+0xa2/0x174 do_one_initcall+0xee/0x5f0 kernel_init_freeable+0x45a/0x4de kernel_init+0x1f/0x210 ret_from_fork+0x1f/0x30 The buggy address belongs to the object at ffff8881052f7800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 1016 bytes inside of 1024-byte region [ffff8881052f7800, ffff8881052f7c00) The buggy address belongs to the page: page:0000000052355272 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1052f0 head:0000000052355272 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 ffffea0005034800 0000000300000003 ffff888100041dc0 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881052f7a80: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc ffff8881052f7b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8881052f7b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881052f7c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881052f7c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [2] https://lore.kernel.org/linux-pm/9aca37cb-1629-5c67- ---truncated---
Severity ?
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a50c1e35650b929500bd89be61c89d95a267ce56 , < ae0993739e14a102d506aa09e11b0065f3144f10 (git)
Affected: a50c1e35650b929500bd89be61c89d95a267ce56 , < e59d839743b50cb1d3f42a786bea48cc5621d254 (git)
Affected: a50c1e35650b929500bd89be61c89d95a267ce56 , < df8e58716afb3bee2b59de66b1ba1033f2e26303 (git)
Affected: a50c1e35650b929500bd89be61c89d95a267ce56 , < 332fdf951df8b870e3da86b122ae304e2aabe88c (git)
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    Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.4.155 , ≤ 5.4.* (semver)
Unaffected: 5.10.75 , ≤ 5.10.* (semver)
Unaffected: 5.14.14 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: thermal: Fix out-of-bounds memory accesses\n\nCurrently, mlxsw allows cooling states to be set above the maximum\ncooling state supported by the driver:\n\n # cat /sys/class/thermal/thermal_zone2/cdev0/type\n mlxsw_fan\n # cat /sys/class/thermal/thermal_zone2/cdev0/max_state\n 10\n # echo 18 \u003e /sys/class/thermal/thermal_zone2/cdev0/cur_state\n # echo $?\n 0\n\nThis results in out-of-bounds memory accesses when thermal state\ntransition statistics are enabled (CONFIG_THERMAL_STATISTICS=y), as the\ntransition table is accessed with a too large index (state) [1].\n\nAccording to the thermal maintainer, it is the responsibility of the\ndriver to reject such operations [2].\n\nTherefore, return an error when the state to be set exceeds the maximum\ncooling state supported by the driver.\n\nTo avoid dead code, as suggested by the thermal maintainer [3],\npartially revert commit a421ce088ac8 (\"mlxsw: core: Extend cooling\ndevice with cooling levels\") that tried to interpret these invalid\ncooling states (above the maximum) in a special way. The cooling levels\narray is not removed in order to prevent the fans going below 20% PWM,\nwhich would cause them to get stuck at 0% PWM.\n\n[1]\nBUG: KASAN: slab-out-of-bounds in thermal_cooling_device_stats_update+0x271/0x290\nRead of size 4 at addr ffff8881052f7bf8 by task kworker/0:0/5\n\nCPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc3-custom-45935-gce1adf704b14 #122\nHardware name: Mellanox Technologies Ltd. \"MSN2410-CB2FO\"/\"SA000874\", BIOS 4.6.5 03/08/2016\nWorkqueue: events_freezable_power_ thermal_zone_device_check\nCall Trace:\n dump_stack_lvl+0x8b/0xb3\n print_address_description.constprop.0+0x1f/0x140\n kasan_report.cold+0x7f/0x11b\n thermal_cooling_device_stats_update+0x271/0x290\n __thermal_cdev_update+0x15e/0x4e0\n thermal_cdev_update+0x9f/0xe0\n step_wise_throttle+0x770/0xee0\n thermal_zone_device_update+0x3f6/0xdf0\n process_one_work+0xa42/0x1770\n worker_thread+0x62f/0x13e0\n kthread+0x3ee/0x4e0\n ret_from_fork+0x1f/0x30\n\nAllocated by task 1:\n kasan_save_stack+0x1b/0x40\n __kasan_kmalloc+0x7c/0x90\n thermal_cooling_device_setup_sysfs+0x153/0x2c0\n __thermal_cooling_device_register.part.0+0x25b/0x9c0\n thermal_cooling_device_register+0xb3/0x100\n mlxsw_thermal_init+0x5c5/0x7e0\n __mlxsw_core_bus_device_register+0xcb3/0x19c0\n mlxsw_core_bus_device_register+0x56/0xb0\n mlxsw_pci_probe+0x54f/0x710\n local_pci_probe+0xc6/0x170\n pci_device_probe+0x2b2/0x4d0\n really_probe+0x293/0xd10\n __driver_probe_device+0x2af/0x440\n driver_probe_device+0x51/0x1e0\n __driver_attach+0x21b/0x530\n bus_for_each_dev+0x14c/0x1d0\n bus_add_driver+0x3ac/0x650\n driver_register+0x241/0x3d0\n mlxsw_sp_module_init+0xa2/0x174\n do_one_initcall+0xee/0x5f0\n kernel_init_freeable+0x45a/0x4de\n kernel_init+0x1f/0x210\n ret_from_fork+0x1f/0x30\n\nThe buggy address belongs to the object at ffff8881052f7800\n which belongs to the cache kmalloc-1k of size 1024\nThe buggy address is located 1016 bytes inside of\n 1024-byte region [ffff8881052f7800, ffff8881052f7c00)\nThe buggy address belongs to the page:\npage:0000000052355272 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1052f0\nhead:0000000052355272 order:3 compound_mapcount:0 compound_pincount:0\nflags: 0x200000000010200(slab|head|node=0|zone=2)\nraw: 0200000000010200 ffffea0005034800 0000000300000003 ffff888100041dc0\nraw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000\npage dumped because: kasan: bad access detected\n\nMemory state around the buggy address:\n ffff8881052f7a80: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc\n ffff8881052f7b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n\u003effff8881052f7b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n                                                                ^\n ffff8881052f7c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n ffff8881052f7c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n\n[2] https://lore.kernel.org/linux-pm/9aca37cb-1629-5c67-\n---truncated---"
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\"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47441\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-22T15:01:53.700681Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"a50c1e35650b\", \"lessThan\": \"ae0993739e14\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.10\"}], \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.10\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"\\t5.4.155\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.5\"}], \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"5.10.75\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.11\"}], \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"5.14.14\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"5.15\"}], \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"5.15\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"*\"}, {\"status\": \"affected\", \"version\": \"a50c1e35650b\", \"lessThan\": \"e59d839743b5\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"a50c1e35650b\", \"lessThan\": \"df8e58716afb\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"a50c1e35650b\", \"lessThan\": \"332fdf951df8\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-787\", \"description\": \"CWE-787 Out-of-bounds Write\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-22T15:07:31.546Z\"}}], \"cna\": {\"title\": \"mlxsw: thermal: Fix out-of-bounds memory accesses\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"a50c1e35650b929500bd89be61c89d95a267ce56\", \"lessThan\": \"ae0993739e14a102d506aa09e11b0065f3144f10\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a50c1e35650b929500bd89be61c89d95a267ce56\", \"lessThan\": \"e59d839743b50cb1d3f42a786bea48cc5621d254\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a50c1e35650b929500bd89be61c89d95a267ce56\", \"lessThan\": \"df8e58716afb3bee2b59de66b1ba1033f2e26303\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a50c1e35650b929500bd89be61c89d95a267ce56\", \"lessThan\": \"332fdf951df8b870e3da86b122ae304e2aabe88c\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlxsw/core_thermal.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.155\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.75\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.14.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/mellanox/mlxsw/core_thermal.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ae0993739e14a102d506aa09e11b0065f3144f10\"}, {\"url\": \"https://git.kernel.org/stable/c/e59d839743b50cb1d3f42a786bea48cc5621d254\"}, {\"url\": \"https://git.kernel.org/stable/c/df8e58716afb3bee2b59de66b1ba1033f2e26303\"}, {\"url\": \"https://git.kernel.org/stable/c/332fdf951df8b870e3da86b122ae304e2aabe88c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmlxsw: thermal: Fix out-of-bounds memory accesses\\n\\nCurrently, mlxsw allows cooling states to be set above the maximum\\ncooling state supported by the driver:\\n\\n # cat /sys/class/thermal/thermal_zone2/cdev0/type\\n mlxsw_fan\\n # cat /sys/class/thermal/thermal_zone2/cdev0/max_state\\n 10\\n # echo 18 \u003e /sys/class/thermal/thermal_zone2/cdev0/cur_state\\n # echo $?\\n 0\\n\\nThis results in out-of-bounds memory accesses when thermal state\\ntransition statistics are enabled (CONFIG_THERMAL_STATISTICS=y), as the\\ntransition table is accessed with a too large index (state) [1].\\n\\nAccording to the thermal maintainer, it is the responsibility of the\\ndriver to reject such operations [2].\\n\\nTherefore, return an error when the state to be set exceeds the maximum\\ncooling state supported by the driver.\\n\\nTo avoid dead code, as suggested by the thermal maintainer [3],\\npartially revert commit a421ce088ac8 (\\\"mlxsw: core: Extend cooling\\ndevice with cooling levels\\\") that tried to interpret these invalid\\ncooling states (above the maximum) in a special way. The cooling levels\\narray is not removed in order to prevent the fans going below 20% PWM,\\nwhich would cause them to get stuck at 0% PWM.\\n\\n[1]\\nBUG: KASAN: slab-out-of-bounds in thermal_cooling_device_stats_update+0x271/0x290\\nRead of size 4 at addr ffff8881052f7bf8 by task kworker/0:0/5\\n\\nCPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc3-custom-45935-gce1adf704b14 #122\\nHardware name: Mellanox Technologies Ltd. \\\"MSN2410-CB2FO\\\"/\\\"SA000874\\\", BIOS 4.6.5 03/08/2016\\nWorkqueue: events_freezable_power_ thermal_zone_device_check\\nCall Trace:\\n dump_stack_lvl+0x8b/0xb3\\n print_address_description.constprop.0+0x1f/0x140\\n kasan_report.cold+0x7f/0x11b\\n thermal_cooling_device_stats_update+0x271/0x290\\n __thermal_cdev_update+0x15e/0x4e0\\n thermal_cdev_update+0x9f/0xe0\\n step_wise_throttle+0x770/0xee0\\n thermal_zone_device_update+0x3f6/0xdf0\\n process_one_work+0xa42/0x1770\\n worker_thread+0x62f/0x13e0\\n kthread+0x3ee/0x4e0\\n ret_from_fork+0x1f/0x30\\n\\nAllocated by task 1:\\n kasan_save_stack+0x1b/0x40\\n __kasan_kmalloc+0x7c/0x90\\n thermal_cooling_device_setup_sysfs+0x153/0x2c0\\n __thermal_cooling_device_register.part.0+0x25b/0x9c0\\n thermal_cooling_device_register+0xb3/0x100\\n mlxsw_thermal_init+0x5c5/0x7e0\\n __mlxsw_core_bus_device_register+0xcb3/0x19c0\\n mlxsw_core_bus_device_register+0x56/0xb0\\n mlxsw_pci_probe+0x54f/0x710\\n local_pci_probe+0xc6/0x170\\n pci_device_probe+0x2b2/0x4d0\\n really_probe+0x293/0xd10\\n __driver_probe_device+0x2af/0x440\\n driver_probe_device+0x51/0x1e0\\n __driver_attach+0x21b/0x530\\n bus_for_each_dev+0x14c/0x1d0\\n bus_add_driver+0x3ac/0x650\\n driver_register+0x241/0x3d0\\n mlxsw_sp_module_init+0xa2/0x174\\n do_one_initcall+0xee/0x5f0\\n kernel_init_freeable+0x45a/0x4de\\n kernel_init+0x1f/0x210\\n ret_from_fork+0x1f/0x30\\n\\nThe buggy address belongs to the object at ffff8881052f7800\\n which belongs to the cache kmalloc-1k of size 1024\\nThe buggy address is located 1016 bytes inside of\\n 1024-byte region [ffff8881052f7800, ffff8881052f7c00)\\nThe buggy address belongs to the page:\\npage:0000000052355272 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1052f0\\nhead:0000000052355272 order:3 compound_mapcount:0 compound_pincount:0\\nflags: 0x200000000010200(slab|head|node=0|zone=2)\\nraw: 0200000000010200 ffffea0005034800 0000000300000003 ffff888100041dc0\\nraw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffff8881052f7a80: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc\\n ffff8881052f7b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\\n\u003effff8881052f7b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\\n                                                                ^\\n ffff8881052f7c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\\n ffff8881052f7c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\\n\\n[2] https://lore.kernel.org/linux-pm/9aca37cb-1629-5c67-\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.155\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.75\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.14.14\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15\", \"versionStartIncluding\": \"4.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:10:56.649Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47441\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:10:56.649Z\", \"dateReserved\": \"2024-05-21T14:58:30.831Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-22T06:19:35.562Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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  • 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.



Detection rules are retrieved from Rulezet.