Vulnerability-Lookup

CVE-2024-46839 (GCVE-0-2024-46839)

Vulnerability from cvelistv5 – Published: 2024-09-27 12:39 – Updated: 2024-10-01 13:53

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Show details on NVD website

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      "title": "kernel: workqueue: Improve scalability of workqueue watchdog touch",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-46839",
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FKIE_CVE-2024-46839

Vulnerability from fkie_nvd - Published: 2024-09-27 13:15 - Updated: 2024-10-01 14:15

Severity

Summary

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

References

	URL	Tags

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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}

GHSA-QC3W-VGWV-55X5

Vulnerability from github – Published: 2024-09-27 15:30 – Updated: 2024-09-27 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

workqueue: Improve scalability of workqueue watchdog touch

On a ~2000 CPU powerpc system, hard lockups have been observed in the workqueue code when stop_machine runs (in this case due to CPU hotplug). This is due to lots of CPUs spinning in multi_cpu_stop, calling touch_nmi_watchdog() which ends up calling wq_watchdog_touch(). wq_watchdog_touch() writes to the global variable wq_watchdog_touched, and that can find itself in the same cacheline as other important workqueue data, which slows down operations to the point of lockups.

In the case of the following abridged trace, worker_pool_idr was in the hot line, causing the lockups to always appear at idr_find.

watchdog: CPU 1125 self-detected hard LOCKUP @ idr_find Call Trace: get_work_pool __queue_work call_timer_fn run_timer_softirq __do_softirq do_softirq_own_stack irq_exit timer_interrupt decrementer_common_virt * interrupt: 900 (timer) at multi_cpu_stop multi_cpu_stop cpu_stopper_thread smpboot_thread_fn kthread

Fix this by having wq_watchdog_touch() only write to the line if the last time a touch was recorded exceeds 1/4 of the watchdog threshold.

Show details on source website

JSON

To clipboard

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  "affected": [],
  "aliases": [
    "CVE-2024-46839"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-27T13:15:15Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nworkqueue: Improve scalability of workqueue watchdog touch\n\nOn a ~2000 CPU powerpc system, hard lockups have been observed in the\nworkqueue code when stop_machine runs (in this case due to CPU hotplug).\nThis is due to lots of CPUs spinning in multi_cpu_stop, calling\ntouch_nmi_watchdog() which ends up calling wq_watchdog_touch().\nwq_watchdog_touch() writes to the global variable wq_watchdog_touched,\nand that can find itself in the same cacheline as other important\nworkqueue data, which slows down operations to the point of lockups.\n\nIn the case of the following abridged trace, worker_pool_idr was in\nthe hot line, causing the lockups to always appear at idr_find.\n\n  watchdog: CPU 1125 self-detected hard LOCKUP @ idr_find\n  Call Trace:\n  get_work_pool\n  __queue_work\n  call_timer_fn\n  run_timer_softirq\n  __do_softirq\n  do_softirq_own_stack\n  irq_exit\n  timer_interrupt\n  decrementer_common_virt\n  * interrupt: 900 (timer) at multi_cpu_stop\n  multi_cpu_stop\n  cpu_stopper_thread\n  smpboot_thread_fn\n  kthread\n\nFix this by having wq_watchdog_touch() only write to the line if the\nlast time a touch was recorded exceeds 1/4 of the watchdog threshold.",
  "id": "GHSA-qc3w-vgwv-55x5",
  "modified": "2024-09-27T15:30:34Z",
  "published": "2024-09-27T15:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46839"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/241bce1c757d0587721512296952e6bba69631ed"
    },
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      "url": "https://git.kernel.org/stable/c/98f887f820c993e05a12e8aa816c80b8661d4c87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d08fce64dd77f42e2361a4818dbc4b50f3c7dad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2abd35e7dc55bf9ed01e2b3481fa78e086d3bf4"
    },
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da5f374103a1e0881bbd35847dc57b04ac155eb0"
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RHSA-2025:6966

Vulnerability from csaf_redhat - Published: 2025-05-13 08:28 - Updated: 2026-09-14 12:21

Summary

Red Hat Security Advisory: kernel security update

Severity

Moderate

Scope

406 vulnerabilities in this advisory, including CVE-2024-46839.

CVE-2024-46839

No description is available for this CVE.

Fixed: 305 products

https://access.redhat.com/errata/RHSA-2025:6966

Open the full advisory

WID-SEC-W-2024-3050

Vulnerability from csaf_certbund - Published: 2024-09-29 22:00 - Updated: 2026-05-27 22:00

Summary

Linux Kernel: Mehrere Schwachstellen

Severity

Niedrig

Scope

68 vulnerabilities in this advisory, including CVE-2024-46839.

CVE-2024-46839

Known affected: 13 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

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.
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.

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.

Action not permitted

CVE-2024-46839 (GCVE-0-2024-46839)

FKIE_CVE-2024-46839

GHSA-QC3W-VGWV-55X5

RHSA-2025:6966

WID-SEC-W-2024-3050

Tags

Sightings

Nomenclature