power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed()

{
  "id": "a1ea1385bf14011d0e005987ca102ab037af878f5218bf1b2ad28bf887f82dfd",
  "url": "https://osv.dev/vulnerability/CVE-2026-45938",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed() Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `power_supply` handle, means that the `power_supply` handle will be deallocated/unregistered _before_ the interrupt handler (since `devm_` naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the `power_supply` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `power_supply_changed()` with a freed `power_supply` handle. Which usually crashes the system or otherwise silently corrupts the memory... Note that there is a similar situation which can also happen during `probe()`; the possibility of an interrupt firing _before_ registering the `power_supply` handle. This would then lead to the nasty situation of using the `power_supply` handle *uninitialized* in `power_supply_changed()`. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.",
    "evidence": "osv:CVE-2026-45938",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.75",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.14",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-45938",
      "aliases": [
        "CVE-2026-45938"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f8d7a3d21160a0cab4d15b81231f2a76b0fcee13"
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                {
                  "fixed": "dbe579e620ef0f53db490ec79a8566e4ea8918ac"
                },
                {
                  "fixed": "08e674e9862a2db46fb234eb7c5442455ece0131"
                },
                {
                  "fixed": "d7d31fc99d248d5f47588f50dce5c7599c991c6a"
                },
                {
                  "fixed": "b7508129978ae1e2ed9b0410396abc05def9c4eb"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45938.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.75"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.14"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45938.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.652824283Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/08e674e9862a2db46fb234eb7c5442455ece0131",
        "https://git.kernel.org/stable/c/b7508129978ae1e2ed9b0410396abc05def9c4eb",
        "https://git.kernel.org/stable/c/d7d31fc99d248d5f47588f50dce5c7599c991c6a",
        "https://git.kernel.org/stable/c/dbe579e620ef0f53db490ec79a8566e4ea8918ac",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45938.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45938",
        "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/2026/45xxx/CVE-2026-45938.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45938",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517732,
  "published_at": "2026-05-27T12:17:54.812+00:00"
}