CVE-2025-40319 (GCVE-0-2025-40319)

Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2026-05-11 21:47
VLAI
Title
bpf: Sync pending IRQ work before freeing ring buffer
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Sync pending IRQ work before freeing ring buffer Fix a race where irq_work can be queued in bpf_ringbuf_commit() but the ring buffer is freed before the work executes. In the syzbot reproducer, a BPF program attached to sched_switch triggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer is freed before this work executes, the irq_work thread may accesses freed memory. Calling `irq_work_sync(&rb->work)` ensures that all pending irq_work complete before freeing the buffer.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < 47626748a2a00068dbbd5836d19076637b4e235b (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < de2ce6b14bc3e565708a39bdba3ef9162aeffc72 (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < e1828c7a8d8135e21ff6adaaa9458c32aae13b11 (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < 6451141103547f4efd774e912418a3b4318046c6 (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < 10ca3b2eec384628bc9f5d8190aed9427ad2dde6 (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < 430e15544f11f8de26b2b5109c7152f71b78295e (git)
Affected: 457f44363a8894135c85b7a9afd2bd8196db24ab , < 4e9077638301816a7d73fa1e1b4c1db4a7e3b59c (git)
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Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.247 , ≤ 5.10.* (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Sync pending IRQ work before freeing ring buffer\n\nFix a race where irq_work can be queued in bpf_ringbuf_commit()\nbut the ring buffer is freed before the work executes.\nIn the syzbot reproducer, a BPF program attached to sched_switch\ntriggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer\nis freed before this work executes, the irq_work thread may accesses\nfreed memory.\nCalling `irq_work_sync(\u0026rb-\u003ework)` ensures that all pending irq_work\ncomplete before freeing the buffer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:47:03.886Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "cveId": "CVE-2025-40319",
    "datePublished": "2025-12-08T00:46:46.448Z",
    "dateReserved": "2025-04-16T07:20:57.186Z",
    "dateUpdated": "2026-05-11T21:47:03.886Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T02:59:52+00:00",
      "cve": "CVE-2025-40319",
      "id": "CVE-2025-40319",
      "initial_release_date": "2025-12-08T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bpf: Sync pending IRQ work before freeing ring buffer",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40319.json",
      "version": "3"
    }
  }
}



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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

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.