Input: powermate - fix use-after-free in powermate_config_complete
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
Input: powermate - fix use-after-free in powermate_config_complete
syzbot has found a use-after-free bug [1] in the powermate driver. This
happens when the device is disconnected, which leads to a memory free from
the powermate_device struct. When an asynchronous control message
completes after the kfree and its callback is invoked, the lock does not
exist anymore and hence the bug.
Use usb_kill_urb() on pm->config to cancel any in-progress requests upon
device disconnection.
[1] https://syzkaller.appspot.com/bug?extid=0434ac83f907a1dbdd1e
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/2efe67c581a2a6122b328d4bb6f21b3f36f40d46https://git.kernel.org/stable/c/5aa514100aaf59868d745196258269a16737c7bdhttps://git.kernel.org/stable/c/5c15c60e7be615f05a45cd905093a54b11f461bchttps://git.kernel.org/stable/c/67cace72606baf1758fd60feb358f4c6be92e1cchttps://git.kernel.org/stable/c/6a4a396386404e62fb59bc3bde48871a64a82b4fhttps://git.kernel.org/stable/c/8677575c4f39d65bf0d719b5d20e8042e550ccb9https://git.kernel.org/stable/c/cd2fbfd8b922b7fdd50732e47d797754ab59cb06https://git.kernel.org/stable/c/e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8