fkie_cve-2021-47006
Vulnerability from fkie_nvd
Published
2024-02-28 09:15
Modified
2025-03-19 10:49
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook The commit 1879445dfa7b ("perf/core: Set event's default ::overflow_handler()") set a default event->overflow_handler in perf_event_alloc(), and replace the check event->overflow_handler with is_default_overflow_handler(), but one is missing. Currently, the bp->overflow_handler can not be NULL. As a result, enable_single_step() is always not invoked. Comments from Zhen Lei: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaacPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917dePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaacPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917dePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bbPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9064/1: hw_breakpoint: Do not directly check the event\u0027s overflow_handler hook\n\nThe commit 1879445dfa7b (\"perf/core: Set event\u0027s default\n::overflow_handler()\") set a default event-\u003eoverflow_handler in\nperf_event_alloc(), and replace the check event-\u003eoverflow_handler with\nis_default_overflow_handler(), but one is missing.\n\nCurrently, the bp-\u003eoverflow_handler can not be NULL. As a result,\nenable_single_step() is always not invoked.\n\nComments from Zhen Lei:\n\n https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ARM: 9064/1: hw_breakpoint: no comprobar directamente el gancho overflow_handler del evento. el commit 1879445dfa7b (\"perf/core: establecer el valor predeterminado del evento ::overflow_handler()\") establece un valor predeterminado event-\u0026gt;overflow_handler en perf_event_alloc(), y reemplace check event-\u0026gt;overflow_handler con is_default_overflow_handler(), pero falta uno. Actualmente, bp-\u0026gt;overflow_handler no puede ser NULL. Como resultado, enable_single_step() no siempre se invoca. Comentarios de Zhen Lei: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/"
    }
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  "id": "CVE-2021-47006",
  "lastModified": "2025-03-19T10:49:05.493",
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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