Tracker / CVE-2022-50229
CVE-2022-50229
High 7.8
In the Linux kernel, the following vulnerability has been resolved: ALSA: bcd2000: Fix a UAF bug on the error path of probing When the driver fails in snd_card_register() at probe time, it will free the 'bcd2k->midi_out_urb' before killing it, which may cause a UAF bug. The following log can reveal it: [ 50.727020] BUG: KASAN: use-after-free in bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] [ 50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0 [ 50.729530] Call Trace: [ 50.732899] bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] Fix this by adding usb_kill_urb() before usb_free_urb().
Affected products and versions
| linux | linux_kernel · 3.16 → 4.9.326 |
|---|---|
| linux | linux_kernel · 4.10 → 4.14.291 |
| linux | linux_kernel · 4.15 → 4.19.256 |
| linux | linux_kernel · 4.20 → 5.4.211 |
| linux | linux_kernel · 5.11 → 5.15.61 |
| linux | linux_kernel · 5.16 → 5.18.18 |
| linux | linux_kernel · 5.19 → 5.19.2 |
| linux | linux_kernel · 5.5 → 5.10.137 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.