{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-43203",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-43203"
  ],
  "published": "2026-05-06T11:29:17Z",
  "summary": "atm: fore200e: fix use-after-free in tasklets during device removal",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\natm: fore200e: fix use-after-free in tasklets during device removal\n\nWhen the PCA-200E or SBA-200E adapter is being detached, the fore200e\nis deallocated. However, the tx_tasklet or rx_tasklet may still be running\nor pending, leading to use-after-free bug when the already freed fore200e\nis accessed again in fore200e_tx_tasklet() or fore200e_rx_tasklet().\n\nOne of the race conditions can occur as follows:\n\nCPU 0 (cleanup)           | CPU 1 (tasklet)\nfore200e_pca_remove_one() | fore200e_interrupt()\n  fore200e_shutdown()     |   tasklet_schedule()\n    kfree(fore200e)       | fore200e_tx_tasklet()\n                          |   fore200e-> // UAF\n\nFix this by ensuring tx_tasklet or rx_tasklet is properly canceled before\nthe fore200e is released. Add tasklet_kill() in fore200e_shutdown() to\nsynchronize with any pending or running tasklets. Moreover, since\nfore200e_reset() could prevent further interrupts or data transfers,\nthe tasklet_kill() should be placed after fore200e_reset() to prevent\nthe tasklet from being rescheduled in fore200e_interrupt(). Finally,\nit only needs to do tasklet_kill() when the fore200e state is greater\nthan or equal to FORE200E_STATE_IRQ, since tasklets are uninitialized\nin earlier states. In a word, the tasklet_kill() should be placed in\nthe FORE200E_STATE_IRQ branch within the switch...case structure.\n\nThis bug was identified through static analysis.",
  "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": "6.1.165",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43203"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/91f25749aaf57c47ae1e12478144e6ea8c8562f2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/73fbc5d1a9ccb626937500bbd67136f077d8237b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/aba0b4bc09376dfc3d53c826514fe38fc8337f52"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e075ec9b08f862dade8011481058f7eb5f716c57"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/97900f512252a59f23d6ce4ab215cc88fed66e68"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e4ff4e3ffcf9d5aad380cdd1d8cdc008bb34f97d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5189368f10903956be05062d160b2804bf5e5016"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8930878101cd40063888a68af73b1b0f8b6c79bc"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z"
  }
}