CVE-2026-46246 (GCVE-0-2026-46246)
Vulnerability from cvelistv5
Published
2026-06-03 15:49
Modified
2026-06-03 15:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `extcon` handle, means that the `extcon` 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 `extcon` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `extcon_set_state_sync()` with a freed `extcon` handle. Which usually crashes the system or otherwise silently corrupts the memory... Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `extcon` handle.
References
Impacted products
Vendor Product Version
Linux Linux Version: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13
Version: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13
Version: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13
Version: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13
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{
  "containers": {
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          "programFiles": [
            "drivers/power/supply/pm8916_lbc.c"
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          "vendor": "Linux",
          "versions": [
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "nodes": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `extcon` handle, means that the\n`extcon` handle will be deallocated/unregistered _before_ the interrupt\nhandler (since `devm_` naturally deallocates in reverse allocation\norder). This means that during removal, there is a race condition where\nan interrupt can fire just _after_ the `extcon` handle has been\nfreed, *but* just _before_ the corresponding unregistration of the IRQ\nhandler has run.\n\nThis will lead to the IRQ handler calling `extcon_set_state_sync()` with\na freed `extcon` handle. Which usually crashes the system or otherwise\nsilently corrupts the memory...\n\nFix this racy use-after-free by making sure the IRQ is requested _after_\nthe registration of the `extcon` handle."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T15:49:41.607Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/9fab0120907e6965168e55b1e17cb9dfaf262b86"
        },
        {
          "url": "https://git.kernel.org/stable/c/47abfc207ab02cf1297257e282e8048da63f0d08"
        },
        {
          "url": "https://git.kernel.org/stable/c/48e0f68b50c344bb2d78d65dd98f93e41276ee00"
        },
        {
          "url": "https://git.kernel.org/stable/c/23067259919663580c6f81801847cfc7bd54fd1f"
        }
      ],
      "title": "power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46246",
    "datePublished": "2026-06-03T15:49:41.607Z",
    "dateReserved": "2026-05-13T15:03:33.107Z",
    "dateUpdated": "2026-06-03T15:49:41.607Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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