CVE-2022-49407 Information

Description

In the Linux kernel the following vulnerability has been resolved:

dlm: fix plock invalid read

This patch fixes an invalid read showed by KASAN. A unlock will allocate a \struct plock_op\ and a followed send_op() will append it to a global send_list data structure. In some cases a followed dev_read() moves it to recv_list and dev_write() will cast it to \struct plock_xop\ and access fields which are only available in those structures. At this point an invalid read happens by accessing those fields.

To fix this issue the ## Reference https://git.kernel.org/stable/c/2c55155cc365861044d9e6e80e342693e8805e33 https://git.kernel.org/stable/c/42252d0d2aa9b94d168241710a761588b3959019 https://git.kernel.org/stable/c/49cd9eb7b9a7b88124b31e31f8e539acaf1b3a6d https://git.kernel.org/stable/c/56aa8d1fbd02357f3bf81bdfba1cde87ce8402fc https://git.kernel.org/stable/c/5a1765adf9855cf0f6d3f7e0eb4b78ca66f70dee https://git.kernel.org/stable/c/72f2f68970f9bdc252d59e119b385a6441b0b155 https://git.kernel.org/stable/c/899bc4429174861122f0c236588700a4710c1fec https://git.kernel.org/stable/c/acdad5bc9827922ec2f2e84fd198718aa8e8ab92 https://git.kernel.org/stable/c/e421872fa17542cf33747071fb141b0130ce9ef7