Description (CNA)
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]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d6ccc442b12102414c1343f0adacaa8a1aaa516c before 9644c96ef8646c65d46caa5139a6631e29b79d6c; affected d6ccc442b12102414c1343f0adacaa8a1aaa516c before e9fffe10bd791082263c1678f2f6cdd6d7b487e0; affected d6ccc442b12102414c1343f0adacaa8a1aaa516c before c46c205bab0dfce4dd54aeb49da3f183e1fdfc63; affected d6ccc442b12102414c1343f0adacaa8a1aaa516c before 72a2d6cd049f892853e4e2d8d8fc5e7d0244a458; affected d6ccc442b12102414c1343f0adacaa8a1aaa516c before a4460e89d4088cfec2da5be33e265ef1a8e780e9; affected d6ccc442b12102414c1343f0adacaa8a1aaa516c before b955da82db4170bdf1c784dc457287aa0c977378; affected d6ccc442b12102414c1343f0adacaa8a1aaa516c before 6eba34732524067da2aad5ddfdfbc641ded10e9e |
| Linux / Linux | affected 2.6.39; unaffected 0 before 2.6.39; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9644c96ef8646c65d46caa5139a6631e29b79d6c
- https://git.kernel.org/stable/c/e9fffe10bd791082263c1678f2f6cdd6d7b487e0
- https://git.kernel.org/stable/c/c46c205bab0dfce4dd54aeb49da3f183e1fdfc63
- https://git.kernel.org/stable/c/72a2d6cd049f892853e4e2d8d8fc5e7d0244a458
- https://git.kernel.org/stable/c/a4460e89d4088cfec2da5be33e265ef1a8e780e9
- https://git.kernel.org/stable/c/b955da82db4170bdf1c784dc457287aa0c977378
- https://git.kernel.org/stable/c/6eba34732524067da2aad5ddfdfbc641ded10e9e