{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-45902",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-45902"
  ],
  "published": "2026-05-27T12:19:29Z",
  "summary": "power: supply: bq256xx: Fix use-after-free in power_supply_changed()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq256xx: Fix use-after-free in power_supply_changed()\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `power_supply` handle, means that\nthe `power_supply` handle will be deallocated/unregistered _before_ the\ninterrupt handler (since `devm_` naturally deallocates in reverse\nallocation order). This means that during removal, there is a race\ncondition where an interrupt can fire just _after_ the `power_supply`\nhandle has been freed, *but* just _before_ the corresponding\nunregistration of the IRQ handler has run.\n\nThis will lead to the IRQ handler calling `power_supply_changed()` with\na freed `power_supply` handle. Which usually crashes the system or\notherwise silently corrupts the memory...\n\nNote that there is a similar situation which can also happen during\n`probe()`; the possibility of an interrupt firing _before_ registering\nthe `power_supply` handle. This would then lead to the nasty situation\nof using the `power_supply` handle *uninitialized* in\n`power_supply_changed()`.\n\nFix this racy use-after-free by making sure the IRQ is requested _after_\nthe registration of the `power_supply` handle.",
  "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-2026-45902"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/81d3688c9a2158329391e08f2d0b8ba204216044"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/74b5a88318db97d51bb40f774736553c2acd1514"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cb5c743936edcebc51880eeb6bf04979b5c9438b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/83c27fdd696ac13d023ef7a0345301be93209c53"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4b6fb0b6124f558131e502e3ffd03e6583b3ace6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8796910131a32ff29275052df768ef022929a394"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8005843369723d9c8975b7c4202d1b85d6125302"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-27T12:19:29Z"
  }
}