Vulnerability-Lookup

GSD-2021-47006

Vulnerability from gsd - Updated: 2024-02-28 06:03

Details

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/

Aliases

CVE-2021-47006

JSON

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CVE-2021-47006 (GCVE-0-2021-47006)

Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2026-05-11 13:46

Title

ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook

Summary

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-02-28 18:46 UTC

CWE

CWE-noinfo Not enough information

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/555a70f7fff03bd66…
https://git.kernel.org/stable/c/ed1f67465327cec44…
https://git.kernel.org/stable/c/a9938d6d78a238d6a…
https://git.kernel.org/stable/c/3ed8832aeaa9a37b0…
https://git.kernel.org/stable/c/630146203108bf6b8…
https://git.kernel.org/stable/c/7eeacc6728c5478e3…
https://git.kernel.org/stable/c/dabe299425b1a53a6…
https://git.kernel.org/stable/c/a506bd5756290821a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < 555a70f7fff03bd669123487905c47ae27dbdaac (git) Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < ed1f67465327cec4457bb988775245b199da86e6 (git) Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb (git) Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < 3ed8832aeaa9a37b0fc386bb72ff604352567c80 (git) Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < 630146203108bf6b8934eec0dfdb3e46dcb917de (git) Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < 7eeacc6728c5478e3c01bc82a1f08958eaa12366 (git) Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < dabe299425b1a53a69461fed7ac8922ea6733a25 (git) Affected: 1879445dfa7bbd6fe21b09c5cc72f4934798afed , < a506bd5756290821a4314f502b4bafc2afcf5260 (git)
Linux	Linux	Affected: 4.7 Unaffected: 0 , < 4.7 (semver) Unaffected: 4.9.269 , ≤ 4.9.* (semver) Unaffected: 4.14.233 , ≤ 4.14.* (semver) Unaffected: 4.19.191 , ≤ 4.19.* (semver) Unaffected: 5.4.120 , ≤ 5.4.* (semver) Unaffected: 5.10.38 , ≤ 5.10.* (semver) Unaffected: 5.11.22 , ≤ 5.11.* (semver) Unaffected: 5.12.5 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.5",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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/"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T13:46:08.152Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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\u0027s overflow_handler hook",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47006",
    "datePublished": "2024-02-28T08:13:26.541Z",
    "dateReserved": "2024-02-27T18:42:55.952Z",
    "dateUpdated": "2026-05-11T13:46:08.152Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GSD-2021-47006

CVE-2021-47006 (GCVE-0-2021-47006)

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Sightings

Nomenclature

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