CVE-2022-50229
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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().
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24dbPatch
- https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3Patch
- https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952Patch
- https://git.kernel.org/stable/c/4fc41f7ebb7efca282f1740ea934d16f33c1d109Patch
- https://git.kernel.org/stable/c/5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0Patch
- https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aaPatch
- https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcacePatch
- https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330dPatch
- https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.