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CVE-2026-45946: Linux

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: power: supply: ab8500: 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()`. Commit 1c1f13a006ed ("power: supply: ab8500: Move to componentized binding") introduced this issue during a refactorization. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.

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    • Linux Linux: 1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb преди 43cbb78ee047b9b12d096d40e3be265969d4c1f8; 1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb преди 551672981fe227122258a25a385a05f5c0746ad6; 1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb преди f50433f2603def08b21a4bf2fd238687fb5cbde9; 1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb преди 847eeb6c0efcd76c7def73857cf798a4fcd8f79b; 1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb преди 709db4b476e254579d9c48ec34d397a41ca0c407; 1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb преди 46dbda27b028d78087667e8280966b99cec015ca; 1c1f13a006ed0d71bb5664c8b7e3e77a28da3beb преди c4af8a98bb52825a5331ae1d0604c0ea6956ba4b; 341db343768bc44f3512facc464021730d64071c; 5.13.4 преди 5.14
    • Linux Linux: 5.14; преди 5.14; 5.15.202 до 5.15.*; 6.1.165 до 6.1.*; 6.6.128 до 6.6.*; 6.12.75 до 6.12.*; 6.18.14 до 6.18.*; 6.19.4 до 6.19.*; от 7.0 нататък

    История

    • 27 май 2026 Публикувано

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