Description
In the Linux kernel, the following vulnerability has been resolved: nbd: fix uaf in nbd_open Commit 4af5f2e03013 ("nbd: use blk_mq_alloc_disk and blk_cleanup_disk") cleans up disk by blk_cleanup_disk() and it won't set disk->private_data as NULL as before. UAF may be triggered in nbd_open() if someone tries to open nbd device right after nbd_put() since nbd has been free in nbd_dev_remove(). Fix this by implementing ->free_disk and free private data in it.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4af5f2e0301311f88c420fcfc5f3c8611ade20ac to < 4e9b3ec84dc97909876641dad14e0a2300d6c2a3affected4af5f2e0301311f88c420fcfc5f3c8611ade20ac to < 879947f4180bc6e83af64eb0515e0cf57fce15dbaffected4af5f2e0301311f88c420fcfc5f3c8611ade20ac to < 56bd7901b5e9dbc9112036ea615ebcba1565fafeaffected4af5f2e0301311f88c420fcfc5f3c8611ade20ac to < 327462725b0f759f093788dfbcb2f1fd132f956baffected
Linux Linux
Default version status: affected
5.14affected0 to < 5.14unaffected6.1.63 to ≤ 6.1.*unaffected6.5.12 to ≤ 6.5.*unaffected6.6.2 to ≤ 6.6.*unaffected6.7 to ≤ *unaffected