CVE-2024-26705
Vulnerability from cvelistv5
Published
2024-04-03 14:55
Modified
2024-11-05 09:14
Severity ?
Summary
parisc: BTLB: Fix crash when setting up BTLB at CPU bringup
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


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                "id": "CVE-2024-26705",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-04-03T17:48:41.158959Z",
                "version": "2.0.3"
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    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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          "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."
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    "cveId": "CVE-2024-26705",
    "datePublished": "2024-04-03T14:55:08.733Z",
    "dateReserved": "2024-02-19T14:20:24.158Z",
    "dateUpdated": "2024-11-05T09:14:13.211Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26705\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-03T15:15:53.243\",\"lastModified\":\"2024-04-03T17:24:18.150\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"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\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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