fkie_cve-2024-26705
Vulnerability from fkie_nvd
Published
2024-04-03 15:15
Modified
2024-11-21 09:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup When using hotplug and bringing up a 32-bit CPU, ask the firmware about the BTLB information to set up the static (block) TLB entries. For that write access to the static btlb_info struct is needed, but since it is marked __ro_after_init the kernel segfaults with missing write permissions. Fix the crash by dropping the __ro_after_init annotation.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: BTLB: Fix crash when setting up BTLB at CPU bringup\n\nWhen using hotplug and bringing up a 32-bit CPU, ask the firmware about the\nBTLB information to set up the static (block) TLB entries.\n\nFor that write access to the static btlb_info struct is needed, but\nsince it is marked __ro_after_init the kernel segfaults with missing\nwrite permissions.\n\nFix the crash by dropping the __ro_after_init annotation."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: parisc: BTLB: soluciona el problema al configurar BTLB al iniciar la CPU. Al usar hotplug y activar una CPU de 32 bits, solicite al firmware la informaci\u00f3n de BTLB para configurar la est\u00e1tica ( bloque) Entradas TLB. Para eso se necesita acceso de escritura a la estructura est\u00e1tica btlb_info, pero como est\u00e1 marcada como __ro_after_init, el kernel falla por defecto y faltan permisos de escritura. Solucione el problema eliminando la anotaci\u00f3n __ro_after_init."
    }
  ],
  "id": "CVE-2024-26705",
  "lastModified": "2024-11-21T09:02:53.087",
  "metrics": {},
  "published": "2024-04-03T15:15:53.243",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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