Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: quiesce delayed work before teardown The threaded IRQ handler can queue pwr_rdy_work, max_charging_time_work and batt_presence_work. pwr_rdy_work and batt_presence_work can also queue max_charging_time_work, while batt_presence_work can requeue itself. rt9455_remove() cancels max_charging_time_work before batt_presence_work. The latter can therefore queue max_charging_time_work after it has already been cancelled: rt9455_remove() workqueue cancel pwr_rdy_work cancel max_charging_time_work batt_presence_work queues max_charging_time_work cancel batt_presence_work return devres frees rt9455_info max_charging_time_work dereferences rt9455_info The IRQ also remains registered until devres cleanup and can queue more work after any of the cancellation calls. If rt9455_hw_init() fails after the IRQ has been requested, probe returns without cancelling work that may already have been queued. A pending callback can then access rt9455_info after it has been freed. Register rt9455_cancel_all_delayed_works() through devm_add_action_or_reset() right after devm_power_supply_register(). devres invokes the action in reverse registration order, after the managed IRQ has been freed and before rt9455_info is released, so the delayed works are drained in both rt9455_remove() and the probe error path. Cancel pwr_rdy_work and batt_presence_work before max_charging_time_work because both can queue the latter. This issue was found by an in-house static analysis tool.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e86d69dd786e94046b8f5be7df1b9a8226a40b2a before 442c60c08ec23ac45da0a58877cab05e0a58f4ea; affected e86d69dd786e94046b8f5be7df1b9a8226a40b2a before df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02; affected e86d69dd786e94046b8f5be7df1b9a8226a40b2a before 1b9978433c61a9b46e48832a1ebceee1cf5c9eb4; affected e86d69dd786e94046b8f5be7df1b9a8226a40b2a before 7323e562f6961e4b7bce3225cde4ecbc78260deb; affected e86d69dd786e94046b8f5be7df1b9a8226a40b2a before 3e7a1ebc32fad5a558254a478efd401c17a24381 |
| Linux / Linux | affected 4.2; unaffected 0 before 4.2; 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/442c60c08ec23ac45da0a58877cab05e0a58f4ea
- https://git.kernel.org/stable/c/df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02
- https://git.kernel.org/stable/c/1b9978433c61a9b46e48832a1ebceee1cf5c9eb4
- https://git.kernel.org/stable/c/7323e562f6961e4b7bce3225cde4ecbc78260deb
- https://git.kernel.org/stable/c/3e7a1ebc32fad5a558254a478efd401c17a24381