In the Linux kernel, the following vulnerability has been resolved: proc: use the same treatment to check proclseek as ones for procreaditer et.al Check pde->procops->proclseek directly may cause UAF in rmmod scenario. It's a gap in procregopen() after commit 654b33ada4ab("proc: fix UAF in procget_inode()"). Followed by AI Viro's suggestion, fix it in same manner.