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 https://git.kernel.org/stable/c/2efe67c581a2a6122b328d4bb6f21b3f36f40d46 https://git.kernel.org/stable/c/5aa514100aaf59868d745196258269a16737c7bd https://git.kernel.org/stable/c/5c15c60e7be615f05a45cd905093a54b11f461bc https://git.kernel.org/stable/c/67cace72606baf1758fd60feb358f4c6be92e1cc https://git.kernel.org/stable/c/6a4a396386404e62fb59bc3bde48871a64a82b4f https://git.kernel.org/stable/c/8677575c4f39d65bf0d719b5d20e8042e550ccb9 https://git.kernel.org/stable/c/cd2fbfd8b922b7fdd50732e47d797754ab59cb06 https://git.kernel.org/stable/c/e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 2267874]
This was fixed for Fedora with the 6.5.8 stable kernel updates.
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52475 is: CHECK Maybe valid. Check manually. with impact LOW (that is an approximation based on flags USB INIT SIMPLEFIX UAF ; these flags parsed automatically based on patch data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.