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bpf: Sync pending IRQ work before freeing ring buffer

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2025-40319

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-40319

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
        "lessThan": "47626748a2a00068dbbd5836d19076637b4e235b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
        "lessThan": "de2ce6b14bc3e565708a39bdba3ef9162aeffc72",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
        "lessThan": "e1828c7a8d8135e21ff6adaaa9458c32aae13b11",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
        "lessThan": "6451141103547f4efd774e912418a3b4318046c6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
        "lessThan": "10ca3b2eec384628bc9f5d8190aed9427ad2dde6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
        "lessThan": "430e15544f11f8de26b2b5109c7152f71b78295e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
        "lessThan": "4e9077638301816a7d73fa1e1b4c1db4a7e3b59c",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "kernel/bpf/ringbuf.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.8",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.247",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.197",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.159",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.117",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.58",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.17.8",
        "versionType": "semver",
        "lessThanOrEqual": "6.17.*"
      },
      {
        "status": "unaffected",
        "version": "6.18",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "kernel/bpf/ringbuf.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-40319

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30713 · Revision 1
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Publisher date
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