CVE-2023-52837 nbd: fix uaf in nbd_open

In the Linux kernel, the following vulnerability has been resolved: nbd: fix uaf in nbdopen Commit 4af5f2e03013 "nbd: use blkmqallocdisk and blkcleanupdisk" cleans up disk by blkcleanupdisk and it won't set disk-privatedata as NULL as before. UAF may be triggered in nbdopen if someone tries to op...

CVE-2023-52837

In CVE-2023-52837, the Linux kernel fixed a use-after-free in nbd_open triggered when a disk is opened after nbd_put() because disk->private_data could still reference freed memory. The fix adds a dedicated ->free_disk hook that frees the private data as part of disk cleanup (blk_cleanup_di...

CVE-2023-52837

In the Linux kernel, the following vulnerability has been resolved: nbd: fix uaf in nbdopen Commit 4af5f2e03013 "nbd: use blkmqallocdisk and blkcleanupdisk" cleans up disk by blkcleanupdisk and it won't set disk-privatedata as NULL as before. UAF may be triggered in nbdopen if someone tries to op...