CVE-2026-45879 (GCVE-0-2026-45879)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:16 – Updated: 2026-05-27 12:16
VLAI
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5069185fc18e810715a91d80fcd075e03add600c , < 86f93dfb23f5bf4f285c4256a7e909d222f7de56 (git)
Affected: 5069185fc18e810715a91d80fcd075e03add600c , < 16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f (git)
Affected: 5069185fc18e810715a91d80fcd075e03add600c , < 0560a4b09c92e2ecaa883965cf6f9ca51c158ff9 (git)
Affected: 5069185fc18e810715a91d80fcd075e03add600c , < 0de95d29d847c6217b7d5845e24a71a4aee7b359 (git)
Affected: 5069185fc18e810715a91d80fcd075e03add600c , < 4aeaf03c17260415c2fdd55992f9ad4188d5455a (git)
Affected: 5069185fc18e810715a91d80fcd075e03add600c , < 03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c (git)
Affected: 5069185fc18e810715a91d80fcd075e03add600c , < abea607ff2f62f4c0a5fb29f7fbdaaab163276a4 (git)
Affected: 5069185fc18e810715a91d80fcd075e03add600c , < 5f0b1cb41906e86b64bf69f5ededb83b0d757c27 (git)
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Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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            "drivers/power/supply/bq25980_charger.c"
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      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:16:50.137Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2026-05-13T15:03:33.081Z",
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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