CVE-2021-47202
Vulnerability from cvelistv5
Published
2024-04-10 18:56
Modified
2024-11-04 12:01
Severity ?
EPSS score ?
Summary
thermal: Fix NULL pointer dereferences in of_thermal_ functions
References
Impacted products
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: Fix NULL pointer dereferences in of_thermal_ functions\n\nof_parse_thermal_zones() parses the thermal-zones node and registers a\nthermal_zone device for each subnode. However, if a thermal zone is\nconsuming a thermal sensor and that thermal sensor device hasn\u0027t probed\nyet, an attempt to set trip_point_*_temp for that thermal zone device\ncan cause a NULL pointer dereference. Fix it.\n\n console:/sys/class/thermal/thermal_zone87 # echo 120000 \u003e trip_point_0_temp\n ...\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\n ...\n Call trace:\n of_thermal_set_trip_temp+0x40/0xc4\n trip_point_temp_store+0xc0/0x1dc\n dev_attr_store+0x38/0x88\n sysfs_kf_write+0x64/0xc0\n kernfs_fop_write_iter+0x108/0x1d0\n vfs_write+0x2f4/0x368\n ksys_write+0x7c/0xec\n __arm64_sys_write+0x20/0x30\n el0_svc_common.llvm.7279915941325364641+0xbc/0x1bc\n do_el0_svc+0x28/0xa0\n el0_svc+0x14/0x24\n el0_sync_handler+0x88/0xec\n el0_sync+0x1c0/0x200\n\nWhile at it, fix the possible NULL pointer dereference in other\nfunctions as well: of_thermal_get_temp(), of_thermal_set_emul_temp(),\nof_thermal_get_trend()."
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"dateUpdated": "2024-11-04T12:01:26.488Z",
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"title": "thermal: Fix NULL pointer dereferences in of_thermal_ functions",
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"datePublished": "2024-04-10T18:56:36.408Z",
"dateReserved": "2024-03-25T09:12:14.117Z",
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"nvd": "{\"cve\":{\"id\":\"CVE-2021-47202\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-10T19:15:48.167\",\"lastModified\":\"2024-11-21T06:35:37.220\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nthermal: Fix NULL pointer dereferences in of_thermal_ functions\\n\\nof_parse_thermal_zones() parses the thermal-zones node and registers a\\nthermal_zone device for each subnode. However, if a thermal zone is\\nconsuming a thermal sensor and that thermal sensor device hasn\u0027t probed\\nyet, an attempt to set trip_point_*_temp for that thermal zone device\\ncan cause a NULL pointer dereference. Fix it.\\n\\n console:/sys/class/thermal/thermal_zone87 # echo 120000 \u003e trip_point_0_temp\\n ...\\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\\n ...\\n Call trace:\\n of_thermal_set_trip_temp+0x40/0xc4\\n trip_point_temp_store+0xc0/0x1dc\\n dev_attr_store+0x38/0x88\\n sysfs_kf_write+0x64/0xc0\\n kernfs_fop_write_iter+0x108/0x1d0\\n vfs_write+0x2f4/0x368\\n ksys_write+0x7c/0xec\\n __arm64_sys_write+0x20/0x30\\n el0_svc_common.llvm.7279915941325364641+0xbc/0x1bc\\n do_el0_svc+0x28/0xa0\\n el0_svc+0x14/0x24\\n el0_sync_handler+0x88/0xec\\n el0_sync+0x1c0/0x200\\n\\nWhile at it, fix the possible NULL pointer dereference in other\\nfunctions as well: of_thermal_get_temp(), of_thermal_set_emul_temp(),\\nof_thermal_get_trend().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: thermal: Fix NULL pointer dereferences in of_thermal_ functions of_parse_thermal_zones() analiza el nodo thermal-zones y registra un dispositivo thermal_zone para cada subnodo. Sin embargo, si una zona t\u00e9rmica est\u00e1 consumiendo un sensor t\u00e9rmico y ese dispositivo de sensor t\u00e9rmico a\u00fan no ha realizado la prueba, un intento de establecer trip_point_*_temp para ese dispositivo de zona t\u00e9rmica puede provocar una desreferencia de puntero NULL. Arr\u00e9glelo. console:/sys/class/thermal/thermal_zone87 # echo 120000 \u0026gt; trip_point_0_temp ... No se puede manejar la desreferencia del puntero NULL del n\u00facleo en la direcci\u00f3n virtual 0000000000000020 ... Seguimiento de llamadas: of_thermal_set_trip_temp+0x40/0xc4 trip_point_temp_store+0xc0/0x1dc dev_attr_store+0x38/0x88 sysfs_kf_write+0x64/0xc0 kernfs_fop_write_iter+0x108/0x1d0 vfs_write+0x2f4/0x368 ksys_write+0x7c/0xec __arm64_sys_write+0x20/0x30 el0_svc_common.llvm.7279915941325364641+0xbc/0x1bc do_el0_svc+0x28/0xa0 el0_svc+0x14/0x24 el0_sync_handler+0x88/0xec el0_sync+0x1c0/0x200 Mientras tanto, corrija tambi\u00e9n la posible desreferencia del puntero NULL en otras funciones: of_thermal_get_temp(), of_thermal_set_emul_temp(), of_thermal_get_trend().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0750f769b95841b34a9fe8c418dd792ff526bf86\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6a315471cb6a07f651e1d3adc8962730f4fcccac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/828f4c31684da94ecf0b44a2cbd35bbede04f0bd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/96cfe05051fd8543cdedd6807ec59a0e6c409195\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef2590a5305e0b8e9342f84c2214aa478ee7f28e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0750f769b95841b34a9fe8c418dd792ff526bf86\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/6a315471cb6a07f651e1d3adc8962730f4fcccac\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/828f4c31684da94ecf0b44a2cbd35bbede04f0bd\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/96cfe05051fd8543cdedd6807ec59a0e6c409195\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ef2590a5305e0b8e9342f84c2214aa478ee7f28e\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
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Sightings
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Nomenclature
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