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https://github.com/fkie-cad/nvd-json-data-feeds.git
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33 lines
2.3 KiB
JSON
33 lines
2.3 KiB
JSON
{
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"id": "CVE-2021-47218",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-04-10T19:15:48.860",
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"lastModified": "2024-04-10T19:49:51.183",
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"vulnStatus": "Awaiting Analysis",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: fix NULL-pointer dereference when hashtab allocation fails\n\nWhen the hash table slot array allocation fails in hashtab_init(),\nh->size is left initialized with a non-zero value, but the h->htable\npointer is NULL. This may then cause a NULL pointer dereference, since\nthe policydb code relies on the assumption that even after a failed\nhashtab_init(), hashtab_map() and hashtab_destroy() can be safely called\non it. Yet, these detect an empty hashtab only by looking at the size.\n\nFix this by making sure that hashtab_init() always leaves behind a valid\nempty hashtab when the allocation fails."
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: selinux: corregir la desreferencia de puntero NULL cuando falla la asignaci\u00f3n de hashtab Cuando la asignaci\u00f3n de la matriz de ranuras de la tabla hash falla en hashtab_init(), h->size se deja inicializado con un valor distinto de cero, pero el puntero h->htable es NULL. Esto puede causar una desreferencia de puntero NULL, ya que el c\u00f3digo policydb se basa en la suposici\u00f3n de que incluso despu\u00e9s de un hashtab_init() fallido, se pueden llamar hashtab_map() y hashtab_destroy() de forma segura. Sin embargo, estos detectan un hashtab vac\u00edo solo mirando el tama\u00f1o. Solucione esto asegur\u00e1ndose de que hashtab_init() siempre deje atr\u00e1s un hashtab vac\u00edo v\u00e1lido cuando falla la asignaci\u00f3n."
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}
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],
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"metrics": {},
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/83c8ab8503adf56bf68dafc7a382f4946c87da79",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/b17dd53cac769dd13031b0ca34f90cc65e523fab",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/dc27f3c5d10c58069672215787a96b4fae01818b",
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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}
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]
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} |