CVSS 7.0 · High EPSS 0,23%
Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.0 (High) menurut NVD.
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.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Semua versi sebelum 5.10.227 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.168 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.113 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.57 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.11.4 |