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power: supply: bq25980: Fix use-after-free in power_supply_changed()

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: power: supply: bq25980: 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.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4, 6.6.128
CVEs
CVE-2026-45879
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 14:46 UTC · Revision 1

Source evidence

power: supply: bq25980: Fix use-after-free in power_supply_changed()

core-osv · Original source

Published 27 May 2026, 12:16 UTC

In the Linux kernel, the following vulnerability has been resolved: power: supply: bq25980: 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.

osv:CVE-2026-45879

Kernel

Fixed versions: 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4

Complete source record
{
  "id": "5b298b57a8279d8c92fefddac3835f4bac2fd8d16c414959b09d2898f0f74967",
  "url": "https://osv.dev/vulnerability/CVE-2026-45879",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "power: supply: bq25980: Fix use-after-free in power_supply_changed()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: power: supply: bq25980: 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-2026-45879",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
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            "value": "5.15.202",
            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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          {
            "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-2026-45879",
      "aliases": [
        "CVE-2026-45879"
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              "type": "ECOSYSTEM",
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                {
                  "introduced": "5.10.0"
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                {
                  "fixed": "5.10.252"
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              ]
            },
            {
              "type": "ECOSYSTEM",
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                {
                  "introduced": "5.11.0"
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                  "introduced": "5.16.0"
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            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:29.742418400Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c",
        "https://git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9",
        "https://git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359",
        "https://git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f",
        "https://git.kernel.org/stable/c/4aeaf03c17260415c2fdd55992f9ad4188d5455a",
        "https://git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27",
        "https://git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56",
        "https://git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45879.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45879",
        "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-2026-45879.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45879",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 496503,
  "published_at": "2026-05-27T12:16:50.137+00:00"
}