CVE-2024-26993

{"id": "CVE-2024-26993", "metrics": {}, "published": "2024-05-01T06:15:17.110", "references": [{"url": "https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: sysfs: Fix reference leak in sysfs_break_active_protection()\n\nThe sysfs_break_active_protection() routine has an obvious reference\nleak in its error path. If the call to kernfs_find_and_get() fails then\nkn will be NULL, so the companion sysfs_unbreak_active_protection()\nroutine won't get called (and would only cause an access violation by\ntrying to dereference kn->parent if it was called). As a result, the\nreference to kobj acquired at the start of the function will never be\nreleased.\n\nFix the leak by adding an explicit kobject_put() call when kn is NULL."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs: sysfs: corrige la fuga de referencia en sysfs_break_active_protection() La rutina sysfs_break_active_protection() tiene una fuga de referencia obvia en su ruta de error. Si la llamada a kernfs_find_and_get() falla, entonces kn ser\u00e1 NULL, por lo que no se llamar\u00e1 a la rutina complementaria sysfs_unbreak_active_protection() (y solo causar\u00eda una infracci\u00f3n de acceso al intentar eliminar la referencia a kn->parent si se llamara). Como resultado, la referencia a kobj adquirida al inicio de la funci\u00f3n nunca se publicar\u00e1. Solucione la fuga agregando una llamada expl\u00edcita a kobject_put() cuando kn sea NULL."}], "lastModified": "2024-05-03T06:15:11.530", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}