CVE-2026-46021
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
thermal: core: Fix thermal zone governor cleanup issues
If thermal_zone_device_register_with_trips() fails after adding a thermal governor to the thermal zone being registered, the governor is not removed from it as appropriate which may lead to a memory leak.
In turn, thermal_zone_device_unregister() calls thermal_set_governor() without acquiring the thermal zone lock beforehand which may race with a governor update via sysfs and may lead to a use-after-free in that case.
Address these issues by adding two thermal_set_governor() calls, one to thermal_release() to remove the governor from the given thermal zone, and one to the thermal zone registration error path to cover failures preceding the thermal zone device registration.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.17%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-401
Referencias
- https://git.kernel.org/stable/c/37a430a2d4e66ec8238da6c7f7e48809bf265e13
- https://git.kernel.org/stable/c/41ff66baf81c6541f4f985dd7eac4494d03d9440
- https://git.kernel.org/stable/c/64d4ebf91d082034bbc5ae3ba2d7fd800bc02d06
- https://git.kernel.org/stable/c/75f8f3c3e09122270986de9d7aa347d701676761
- https://git.kernel.org/stable/c/8e563d8db50f303171aceb79eec0807e7ba06951
- https://git.kernel.org/stable/c/a172fa18bc370b776ac1510abb0dcb50a7a35fac
- https://git.kernel.org/stable/c/d4eb861adde5ce22e459fbd29366f47bb2167977
- https://git.kernel.org/stable/c/f412e541d25a3dfaf3d53e012ade6ff03cae8a45
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal: core: Fix thermal zone governor cleanup issues\n\nIf thermal_zone_device_register_with_trips() fails after adding\na thermal governor to the thermal zone being registered, the\ngovernor is not removed from it as appropriate which may lead to\na memory leak.\n\nIn turn, thermal_zone_device_unregister() calls thermal_set_governor()\nwithout acquiring the thermal zone lock beforehand which may race with\na governor update via sysfs and may lead to a use-after-free in that\ncase.\n\nAddress these issues by adding two thermal_set_governor() calls, one to\nthermal_release() to remove the governor from the given thermal zone,\nand one to the thermal zone registration error path to cover failures\npreceding the thermal zone device registration."
}
],
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