In the Linux kernel, the following vulnerability has been resolved: cifs: Fix xid leak in cifs_flock() If not flock, before return -ENOLCK, should free the xid, otherwise, the xid will be leaked.
https://git.kernel.org/stable/c/f8c9b4a963fec5d0e37e3e8522bb19b0c28e1a73
https://git.kernel.org/stable/c/8905d13b9ede4caa88c577faed832d6c7383f4fb
https://git.kernel.org/stable/c/575e079c782b9862ec2626403922d041a42e6ed6
https://git.kernel.org/stable/c/2d08311aa3056a84bfdc09bc47777de6a9b16c30