cve-2023-4623
Vulnerability from cvelistv5
Published
2023-09-06 13:56
Modified
2024-08-02 07:31
Summary
Use-after-free in Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component
Impacted products
LinuxKernel
Show details on NVD website


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      "source": {
        "discovery": "EXTERNAL"
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      "title": "Use-after-free in Linux kernel\u0027s net/sched: sch_hfsc (HFSC qdisc traffic control) component",
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    "dateReserved": "2023-08-30T11:58:12.267Z",
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This leaves a dangling pointer that can cause a use-after-free.\\n\\nWe recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.\\n\\n\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de Use After Free en el componente net/sched: sch_hfsc (HFSC qdisc traffic control) del kernel de Linux puede ser explotada para conseguir una escalada local de privilegios. Si una clase con una curva de compartici\u00f3n de enlaces (es decir, con la flag HFSC_FSC establecida) tiene un padre sin una curva de compartici\u00f3n de enlaces, entonces init_vf() llamar\u00e1 a vttree_insert() en el padre, pero vttree_remove() se omitir\u00e1 en update_vf(). Esto deja un puntero colgando que puede causar un Use-After-Free. 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  }
}


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