{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-38637",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-38637"
  ],
  "published": "2025-04-18T07:03:05Z",
  "summary": "net_sched: skbprio: Remove overly strict queue assertions",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: skbprio: Remove overly strict queue assertions\n\nIn the current implementation, skbprio enqueue/dequeue contains an assertion\nthat fails under certain conditions when SKBPRIO is used as a child qdisc under\nTBF with specific parameters. The failure occurs because TBF sometimes peeks at\npackets in the child qdisc without actually dequeuing them when tokens are\nunavailable.\n\nThis peek operation creates a discrepancy between the parent and child qdisc\nqueue length counters. When TBF later receives a high-priority packet,\nSKBPRIO's queue length may show a different value than what's reflected in its\ninternal priority queue tracking, triggering the assertion.\n\nThe fix removes this overly strict assertions in SKBPRIO, they are not\nnecessary at all.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.134",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-38637"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7abc8318ce0712182bf0783dcfdd9a6a8331160e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1284733bab736e598341f1d3f3b94e2a322864a8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/32ee79682315e6d3c99947b3f38b078a09a66919"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1dcc144c322a8d526b791135604c0663f1af9d85"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/864ca690ff135078d374bd565b9872f161c614bc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2f35b7673a3aa3d09b3eb05811669622ebaa98ca"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2286770b07cb5268c03d11274b8efd43dff0d380"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/034b293bf17c124fec0f0e663f81203b00aa7a50"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ce8fe975fd99b49c29c42e50f2441ba53112b2e8"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}