{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T19:45:56.388","vulnerabilities":[{"cve":{"id":"CVE-2021-47202","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-04-10T19:15:48.167","lastModified":"2025-01-14T14:42:43.193","vulnStatus":"Analyzed","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't 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 > 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 térmica está consumiendo un sensor térmico y ese dispositivo de sensor térmico aún no ha realizado la prueba, un intento de establecer trip_point_*_temp para ese dispositivo de zona térmica puede provocar una desreferencia de puntero NULL. Arréglelo. console:/sys/class/thermal/thermal_zone87 # echo 120000 > trip_point_0_temp ... No se puede manejar la desreferencia del puntero NULL del núcleo en la dirección 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 también la posible desreferencia del puntero NULL en otras funciones: of_thermal_get_temp(), of_thermal_set_emul_temp(), of_thermal_get_trend()."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4.210","matchCriteriaId":"769A1563-4E73-4FA2-BDEB-9DBD40989582"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.81","matchCriteriaId":"36581F45-F01C-4014-84F2-F7F59F4F5D10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.14.21","matchCriteriaId":"542D1BE5-8431-4A4D-8523-C35DF9570429"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.4","matchCriteriaId":"562752F1-191C-49DC-921A-2032FAC48FD4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0750f769b95841b34a9fe8c418dd792ff526bf86","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6a315471cb6a07f651e1d3adc8962730f4fcccac","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/828f4c31684da94ecf0b44a2cbd35bbede04f0bd","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/96cfe05051fd8543cdedd6807ec59a0e6c409195","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ef2590a5305e0b8e9342f84c2214aa478ee7f28e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/0750f769b95841b34a9fe8c418dd792ff526bf86","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6a315471cb6a07f651e1d3adc8962730f4fcccac","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/828f4c31684da94ecf0b44a2cbd35bbede04f0bd","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/96cfe05051fd8543cdedd6807ec59a0e6c409195","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ef2590a5305e0b8e9342f84c2214aa478ee7f28e","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}