Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition In the switchtec_ntb_add function, it can call switchtec_ntb_init_sndev function, then &sndev->check_link_status_work is bound with check_link_status_work. switchtec_ntb_link_notification may be called to start the work. If we remove the module which will call switchtec_ntb_remove to make cleanup, it will free sndev through kfree(sndev), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | check_link_status_work switchtec_ntb_remove | kfree(sndev); | | if (sndev->link_force_down) | // use sndev Fix it by ensuring that the work is canceled before proceeding with the cleanup in switchtec_ntb_remove.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 before 5126d8f5567f49b52e21fca320eaa97977055099; affected d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 before b650189687822b705711f0567a65a164a314d8df; affected d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 before 92728fceefdaa2a0a3aae675f86193b006eeaa43; affected d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 before 3ae45be8492460a35b5aebf6acac1f1d32708946; affected d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 before fa840ba4bd9f3bad7f104e5b32028ee73af8b3dd; affected d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 before 177925d9c8715a897bb79eca62628862213ba956; affected d04be142b8b61ffb3c9cc5c6d1abda8fc59a16c9 before e51aded92d42784313ba16c12f4f88cc4f973bbb |
| Linux / Linux | affected 4.16; unaffected 0 before 4.16; unaffected 5.4.285 through 5.4.*; unaffected 5.10.227 through 5.10.*; unaffected 5.15.168 through 5.15.*; unaffected 6.1.113 through 6.1.*; unaffected 6.6.57 through 6.6.*; unaffected 6.11.4 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/5126d8f5567f49b52e21fca320eaa97977055099
- https://git.kernel.org/stable/c/b650189687822b705711f0567a65a164a314d8df
- https://git.kernel.org/stable/c/92728fceefdaa2a0a3aae675f86193b006eeaa43
- https://git.kernel.org/stable/c/3ae45be8492460a35b5aebf6acac1f1d32708946
- https://git.kernel.org/stable/c/fa840ba4bd9f3bad7f104e5b32028ee73af8b3dd
- https://git.kernel.org/stable/c/177925d9c8715a897bb79eca62628862213ba956
- https://git.kernel.org/stable/c/e51aded92d42784313ba16c12f4f88cc4f973bbb
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.