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

Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2026-05-11 13:46
VLAI
Title
ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook
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/
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
Assigner
References
Impacted 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)
Create a notification for this product.
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)
Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.