power: supply: twl4030_charger: cancel workers via devm

Summary

In the Linux kernel, the following vulnerability has been resolved: power: supply: twl4030_charger: cancel workers via devm bci is devm-allocated. Two workers (bci->work and bci->current_worker) dereference it. twl4030_bci_remove() disables charging and masks interrupts. It cancels neither worker. A worker pending at remove() can run after devm frees bci. The USB transceiver comes from devm_usb_get_phy_by_node(). devm unregisters its notifier only after remove() returns. A cancel_work_sync() in remove() can then race a notifier reschedule. devm_work_autocancel() and devm_delayed_work_autocancel() avoid that. They cancel the workers during devm release, before bci is freed. The current_worker is registered first, since devm will cancel in reverse order and bci->work can reschedule current_worker. [Move comment about order into the commit message]

Timeline

1. Sep 11, 2026, 7:43 PM UTCCVE published
2. Oct 19, 2026, 8:47 AM UTCRecord last updated

Affected versions

• Linux Linux

  From d6ccc442b12102414c1343f0adacaa8a1aaa516c · fixed in 9644c96ef8646c65d46caa5139a6631e29b79d6c; From d6ccc442b12102414c1343f0adacaa8a1aaa516c · fixed in e9fffe10bd791082263c1678f2f6cdd6d7b487e0; From d6ccc442b12102414c1343f0adacaa8a1aaa516c · fixed in c46c205bab0dfce4dd54aeb49da3f183e1fdfc63; From d6ccc442b12102414c1343f0adacaa8a1aaa516c · fixed in 72a2d6cd049f892853e4e2d8d8fc5e7d0244a458; From d6ccc442b12102414c1343f0adacaa8a1aaa516c · fixed in a4460e89d4088cfec2da5be33e265ef1a8e780e9; From d6ccc442b12102414c1343f0adacaa8a1aaa516c · fixed in b955da82db4170bdf1c784dc457287aa0c977378; From d6ccc442b12102414c1343f0adacaa8a1aaa516c · fixed in 6eba34732524067da2aad5ddfdfbc641ded10e9e

• Linux Linux

  2.6.39

• KernelLinux

  From 2.6.39 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.109; From 6.13.0 · fixed in 6.18.50; From 6.19.0 · fixed in 7.2.4

References 7