CVE-2022-50229 [High] | Use-After-Free in Linux Kernel

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().

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.06%	0.20%	+0.14%
2	2026-04-14	0.03%	0.06%	+0.03%
3	2025-11-19	—	0.03%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.06%

0.20%

+0.14%

2026-04-14

0.03%

0.06%

+0.03%

2025-11-19

—

0.03%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

[email protected]

OS Trackers for CVE-2022-50229

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-50229 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-50229
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2022-50229
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-50229/
`ubuntu`	medium	CVE-2022-50229 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, released 151, ignored 149, not-affected 101, needed 4, needs-triage 1.	https://ubuntu.com/security/CVE-2022-50229

Affected software / configurations for CVE-2022-50229

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 3.16, < 4.9.326	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.10, < 4.14.291	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.256	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.211	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.137	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.61	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 5.18.18	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.19, < 5.19.2	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-50229

URL	Tags
https://git.kernel.org/stable/c/05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db	Patch
https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3	Patch
https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952	Patch
https://git.kernel.org/stable/c/4fc41f7ebb7efca282f1740ea934d16f33c1d109	Patch
https://git.kernel.org/stable/c/5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0	Patch
https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aa	Patch
https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcace	Patch
https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330d	Patch
https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139	Patch

URL

CVE-2022-50229 | ALSA: bcd2000: Fix a UAF bug on the error path of probing

Exploit prediction scoring system (EPSS) score for CVE-2022-50229

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50229

Weakness enumeration for CVE-2022-50229

OS Trackers for CVE-2022-50229

Affected software / configurations for CVE-2022-50229

References for CVE-2022-50229