Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4af5f2e0301311f88c420fcfc5f3c8611ade20ac before 4e9b3ec84dc97909876641dad14e0a2300d6c2a3; affected 4af5f2e0301311f88c420fcfc5f3c8611ade20ac before 879947f4180bc6e83af64eb0515e0cf57fce15db; affected 4af5f2e0301311f88c420fcfc5f3c8611ade20ac before 56bd7901b5e9dbc9112036ea615ebcba1565fafe; affected 4af5f2e0301311f88c420fcfc5f3c8611ade20ac before 327462725b0f759f093788dfbcb2f1fd132f956b |
| Linux / Linux | affected 5.14; unaffected 0 before 5.14; unaffected 6.1.63 through 6.1.*; unaffected 6.5.12 through 6.5.*; unaffected 6.6.2 through 6.6.*; unaffected 6.7 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/4e9b3ec84dc97909876641dad14e0a2300d6c2a3
- https://git.kernel.org/stable/c/879947f4180bc6e83af64eb0515e0cf57fce15db
- https://git.kernel.org/stable/c/56bd7901b5e9dbc9112036ea615ebcba1565fafe
- https://git.kernel.org/stable/c/327462725b0f759f093788dfbcb2f1fd132f956b
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.