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CVE-2023-52836 (GCVE-0-2023-52836)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:31 – Updated: 2026-05-11 19:33
VLAI
Title
locking/ww_mutex/test: Fix potential workqueue corruption
Summary
In the Linux kernel, the following vulnerability has been resolved: locking/ww_mutex/test: Fix potential workqueue corruption In some cases running with the test-ww_mutex code, I was seeing odd behavior where sometimes it seemed flush_workqueue was returning before all the work threads were finished. Often this would cause strange crashes as the mutexes would be freed while they were being used. Looking at the code, there is a lifetime problem as the controlling thread that spawns the work allocates the "struct stress" structures that are passed to the workqueue threads. Then when the workqueue threads are finished, they free the stress struct that was passed to them. Unfortunately the workqueue work_struct node is in the stress struct. Which means the work_struct is freed before the work thread returns and while flush_workqueue is waiting. It seems like a better idea to have the controlling thread both allocate and free the stress structures, so that we can be sure we don't corrupt the workqueue by freeing the structure prematurely. So this patch reworks the test to do so, and with this change I no longer see the early flush_workqueue returns.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-22 19:05 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < d4d37c9e6a4dbcca958dabd99216550525c7e389 (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < d8267cabbe1bed15ccf8b0e684c528bf8eeef715 (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < dcd85e3c929368076a7592b27f541e0da8b427f5 (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < 9ed2d68b3925145f5f51c46559484881d6082f75 (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < e89d0ed45a419c485bae999426ecf92697cbdda3 (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < c56df79d68677cf062da1b6e3b33e74299a92dfc (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < e36407713163363e65566e7af0abe207d5f59a0c (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < 304a2c4aad0fff887ce493e4197bf9cbaf394479 (git)
Affected: 2a0c11282881875dc44f166a20eedf0d866dd0ef , < bccdd808902f8c677317cec47c306e42b93b849e (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 4.14.331 , ≤ 4.14.* (semver)
Unaffected: 4.19.300 , ≤ 4.19.* (semver)
Unaffected: 5.4.262 , ≤ 5.4.* (semver)
Unaffected: 5.10.202 , ≤ 5.10.* (semver)
Unaffected: 5.15.140 , ≤ 5.15.* (semver)
Unaffected: 6.1.64 , ≤ 6.1.* (semver)
Unaffected: 6.5.13 , ≤ 6.5.* (semver)
Unaffected: 6.6.3 , ≤ 6.6.* (semver)
Unaffected: 6.7 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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Parece una mejor idea que el subproceso de control asigne y libere las estructuras de tensi\u00f3n, de modo que podamos estar seguros de no corromper la cola de trabajo al liberar la estructura prematuramente. Entonces, este parche reelabora la prueba para hacerlo, y con este cambio ya no veo los primeros retornos de 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T10:54:51+00:00",
      "cve": "CVE-2023-52836",
      "id": "CVE-2023-52836",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: locking/ww_mutex/test: Fix potential workqueue corruption",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52836.json",
      "version": "3"
    },
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.

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  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.


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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.