igc: don't fail igc_probe() on LED setup error

{
  "id": "7d8ce33e4e72174ed705e92d03c941a383597e03950b6606cb120965f3e4e6ab",
  "url": "https://osv.dev/vulnerability/CVE-2025-39956",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "igc: don't fail igc_probe() on LED setup error",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: igc: don't fail igc_probe() on LED setup error When igc_led_setup() fails, igc_probe() fails and triggers kernel panic in free_netdev() since unregister_netdev() is not called. [1] This behavior can be tested using fault-injection framework, especially the failslab feature. [2] Since LED support is not mandatory, treat LED setup failures as non-fatal and continue probe with a warning message, consequently avoiding the kernel panic. [1] kernel BUG at net/core/dev.c:12047! Oops: invalid opcode: 0000 [#1] SMP NOPTI CPU: 0 UID: 0 PID: 937 Comm: repro-igc-led-e Not tainted 6.17.0-rc4-enjuk-tnguy-00865-gc4940196ab02 #64 PREEMPT(voluntary) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:free_netdev+0x278/0x2b0 [...] Call Trace: igc_probe+0x370/0x910 local_pci_probe+0x3a/0x80 pci_device_probe+0xd1/0x200 [...] [2] #!/bin/bash -ex FAILSLAB_PATH=/sys/kernel/debug/failslab/ DEVICE=0000:00:05.0 START_ADDR=$(grep \" igc_led_setup\" /proc/kallsyms \\ | awk '{printf(\"0x%s\", $1)}') END_ADDR=$(printf \"0x%x\" $((START_ADDR + 0x100))) echo $START_ADDR > $FAILSLAB_PATH/require-start echo $END_ADDR > $FAILSLAB_PATH/require-end echo 1 > $FAILSLAB_PATH/times echo 100 > $FAILSLAB_PATH/probability echo N > $FAILSLAB_PATH/ignore-gfp-wait echo $DEVICE > /sys/bus/pci/drivers/igc/bind",
    "evidence": "osv:CVE-2025-39956",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.49",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-39956",
      "aliases": [
        "CVE-2025-39956"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "bec504867acc7315de9cd96ef9161fa52a25abe8"
                },
                {
                  "fixed": "f05e82d8553232cef150a6dbb70ed67d162abb2b"
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                {
                  "fixed": "528eb4e19ec0df30d0c9ae4074ce945667dde919"
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          "database_specific": {
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        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
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                {
                  "fixed": "6.12.49"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.13.0"
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                  "fixed": "6.16.9"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39956.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.241423786Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/528eb4e19ec0df30d0c9ae4074ce945667dde919",
        "https://git.kernel.org/stable/c/bec504867acc7315de9cd96ef9161fa52a25abe8",
        "https://git.kernel.org/stable/c/f05e82d8553232cef150a6dbb70ed67d162abb2b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39956.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-39956",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39956.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-39956",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496309,
  "published_at": "2025-10-09T09:47:34.253+00:00"
}