CVE-2022-49822

Summary

In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix connections leak when tlink setup failed

If the tlink setup failed, lost to put the connections, then the module refcnt leak since the cifsd kthread not exit.

Also leak the fscache info, and for next mount with fsc, it will print the follow errors: CIFS: Cache volume key already in use (cifs,127.0.0.1:445,TEST)

Let's check the result of tlink setup, and do some cleanup.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux56c762eb9bee330bb4e6d11c589434f2904d3ab6 < 775d6625f96b26b90b9be9164b855ea2c471c0e5affected
LinuxLinux56c762eb9bee330bb4e6d11c589434f2904d3ab6 < a9059e338fc000c0b87d8cf29e93c74fd703212eaffected
LinuxLinux56c762eb9bee330bb4e6d11c589434f2904d3ab6 < 0a087842d10b5daa123ee5291e386cdd78413705affected
LinuxLinux56c762eb9bee330bb4e6d11c589434f2904d3ab6 < 1dcdf5f5b2137185cbdd5385f29949ab3da4f00caffected
LinuxLinux5.0affected
LinuxLinux0 < 5.0unaffected
LinuxLinux5.10.258 <= 5.10.*unaffected
LinuxLinux5.15.81 <= 5.15.*unaffected
LinuxLinux6.0.10 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References