CVE-2021-47006 (GCVE-0-2021-47006)
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2025-05-04 07:02
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-8c081fb06d67 https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
Version: 1879445dfa7bbd6fe21b09c5cc72f4934798afed
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47006\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:38.453\",\"lastModified\":\"2025-03-19T10:49:05.493\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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. 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      "dataVersion": "5.1"
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  }
}


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