{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "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's overflow_handler hook\n\nThe commit 1879445dfa7b (\"perf/core: Set event's default\n::overflow_handler()\") set a default event->overflow_handler in\nperf_event_alloc(), and replace the check event->overflow_handler with\nis_default_overflow_handler(), but one is missing.\n\nCurrently, the bp->overflow_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/"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/arm/kernel/hw_breakpoint.c"
               ],
               "versions": [
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "555a70f7fff0",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "ed1f67465327",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "a9938d6d78a2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "3ed8832aeaa9",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "630146203108",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "7eeacc6728c5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "dabe299425b1",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1879445dfa7b",
                     "lessThan": "a506bd575629",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/arm/kernel/hw_breakpoint.c"
               ],
               "versions": [
                  {
                     "version": "4.7",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "4.7",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.269",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.233",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.191",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.120",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.38",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.11.22",
                     "lessThanOrEqual": "5.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.5",
                     "lessThanOrEqual": "5.12.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.13",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac"
            },
            {
               "url": "https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6"
            },
            {
               "url": "https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb"
            },
            {
               "url": "https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80"
            },
            {
               "url": "https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de"
            },
            {
               "url": "https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366"
            },
            {
               "url": "https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25"
            },
            {
               "url": "https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260"
            }
         ],
         "title": "ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47006",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}