CVSS 7.8 · High EPSS 0,28%
Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: misc/libmasm/module: Fix two use after free in ibmasm_init_one In ibmasm_init_one, it calls ibmasm_init_remote_input_dev(). Inside ibmasm_init_remote_input_dev, mouse_dev and keybd_dev are allocated by input_allocate_device(), and assigned to sp->remote.mouse_dev and sp->remote.keybd_dev respectively. In the err_free_devices error branch of ibmasm_init_one, mouse_dev and keybd_dev are freed by input_free_device(), and return error. Then the execution runs into error_send_message error branch of ibmasm_init_one, where ibmasm_free_remote_input_dev(sp) is called to unregister the freed sp->remote.mouse_dev and sp->remote.keybd_dev. My patch add a "error_init_remote" label to handle the error of ibmasm_init_remote_input_dev(), to avoid the uaf bugs.
CVSS:3.1/AV:L/AC:L/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 4.4.276 |
| linux | linux kernel | Versi 4.5 hingga sebelum 4.9.276 |
| linux | linux kernel | Versi 4.10 hingga sebelum 4.14.240 |
| linux | linux kernel | Versi 4.15 hingga sebelum 4.19.198 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.134 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.52 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.12.19 |
| linux | linux kernel | Versi 5.13 hingga sebelum 5.13.4 |