CVE-2023-52475

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8677575c4f39d65bf0d719b5d20e8042e550ccb9affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 67cace72606baf1758fd60feb358f4c6be92e1ccaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5aa514100aaf59868d745196258269a16737c7bdaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cd2fbfd8b922b7fdd50732e47d797754ab59cb06affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6a4a396386404e62fb59bc3bde48871a64a82b4faffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2efe67c581a2a6122b328d4bb6f21b3f36f40d46affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e528b1b9d60743e0b26224e3fe7aa74c24b8b2f8affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5c15c60e7be615f05a45cd905093a54b11f461bcaffected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux4.14.328 <= 4.14.*unaffected
LinuxLinux4.19.297 <= 4.19.*unaffected
LinuxLinux5.4.259 <= 5.4.*unaffected
LinuxLinux5.10.199 <= 5.10.*unaffected
LinuxLinux5.15.136 <= 5.15.*unaffected
LinuxLinux6.1.59 <= 6.1.*unaffected
LinuxLinux6.5.8 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References