GHSA-PF33-MH27-RP5J
Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-14 15:32In 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": [],
"aliases": [
"CVE-2026-89464"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-11T20:19:27Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: twl4030_charger: cancel workers via devm\n\nbci is devm-allocated. Two workers (bci-\u003ework and bci-\u003ecurrent_worker)\ndereference it. twl4030_bci_remove() disables charging and masks\ninterrupts. It cancels neither worker. A worker pending at remove() can\nrun after devm frees bci.\n\nThe USB transceiver comes from devm_usb_get_phy_by_node(). devm\nunregisters its notifier only after remove() returns. A cancel_work_sync()\nin remove() can then race a notifier reschedule. devm_work_autocancel()\nand devm_delayed_work_autocancel() avoid that. They cancel the workers\nduring devm release, before bci is freed.\n\nThe current_worker is registered first, since devm will cancel in\nreverse order and bci-\u003ework can reschedule current_worker.\n\n[Move comment about order into the commit message]",
"id": "GHSA-pf33-mh27-rp5j",
"modified": "2026-09-14T15:32:24Z",
"published": "2026-09-11T21:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89464"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6eba34732524067da2aad5ddfdfbc641ded10e9e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/72a2d6cd049f892853e4e2d8d8fc5e7d0244a458"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9644c96ef8646c65d46caa5139a6631e29b79d6c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a4460e89d4088cfec2da5be33e265ef1a8e780e9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b955da82db4170bdf1c784dc457287aa0c977378"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c46c205bab0dfce4dd54aeb49da3f183e1fdfc63"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e9fffe10bd791082263c1678f2f6cdd6d7b487e0"
}
],
"schema_version": "1.4.0",
"severity": []
}
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