Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (corsair-cpro) Create debugfs entries after hwmon registration ccp_debugfs_init() registers debugfs files whose private data is the devm allocated ccp. It runs before hwmon_device_register_with_info(), so when that registration fails, ccp_probe() returns with the files still in place. The HID core then frees ccp, and ccp_remove() is not called for a failed probe, so nothing removes them later either. Reading one of the files dereferences the freed pointer. Create the debugfs entries only after the hwmon device has been registered, so no failing path can leave them behind. The two version queries stay where they are. They send USB commands without holding ccp->mutex, which is only safe as long as nothing else can call send_usb_cmd(); once the hwmon device is registered its callbacks can do so concurrently. Only the debugfs creation moves, and it is told which queries succeeded.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
5997eb60f896830126bc1783465b678b110e2fdd to < 6c5d333216a937044acd3336e9ec7e30ff2eaee4affected5997eb60f896830126bc1783465b678b110e2fdd to < a58a966a440071bb877ef62535d1016952f83101affected5997eb60f896830126bc1783465b678b110e2fdd to < fdfe17cb865715aad30328678344eb79889207abaffected5997eb60f896830126bc1783465b678b110e2fdd to < 508baf1713f32f287bfb4f85d759403ec8ba35a3affected
Linux Linux
Default version status: affected
6.11affected0 to < 6.11unaffected6.12.111 to ≤ 6.12.*unaffected6.18.53 to ≤ 6.18.*unaffected7.2.7 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected