fkie_cve-2025-40319
Vulnerability from fkie_nvd
Published
2025-12-08 01:16
Modified
2025-12-08 18:26
Severity ?
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/10ca3b2eec384628bc9f5d8190aed9427ad2dde6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/430e15544f11f8de26b2b5109c7152f71b78295e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47626748a2a00068dbbd5836d19076637b4e235b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e9077638301816a7d73fa1e1b4c1db4a7e3b59c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6451141103547f4efd774e912418a3b4318046c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de2ce6b14bc3e565708a39bdba3ef9162aeffc72
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e1828c7a8d8135e21ff6adaaa9458c32aae13b11
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    }
  ],
  "id": "CVE-2025-40319",
  "lastModified": "2025-12-08T18:26:19.900",
  "metrics": {},
  "published": "2025-12-08T01:16:04.543",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/10ca3b2eec384628bc9f5d8190aed9427ad2dde6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/430e15544f11f8de26b2b5109c7152f71b78295e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/47626748a2a00068dbbd5836d19076637b4e235b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4e9077638301816a7d73fa1e1b4c1db4a7e3b59c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6451141103547f4efd774e912418a3b4318046c6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/de2ce6b14bc3e565708a39bdba3ef9162aeffc72"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e1828c7a8d8135e21ff6adaaa9458c32aae13b11"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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