CVE-2022-49151 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: can: mcba_usb: properly check endpoint type Syzbot reported warning in usb_submit_urb() which is caused by wrong endpoint type. We should check that in endpoint is actually present to prevent this warning. Found pipes are now saved to struct mcba_priv and code uses them directly instead of making pipes in place. Fail log: | usb 5-1: BOGUS urb xfer, pipe 3 != type 1 | WARNING: CPU: 1 PID: 49 at drivers/usb/core/urb.c:502 usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502 | Modules linked in: | CPU: 1 PID: 49 Comm: kworker/1:2 Not tainted 5.17.0-rc6-syzkaller-00184-g38f80f42147f #0 | Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 | Workqueue: usb_hub_wq hub_event | RIP: 0010:usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502 | ... | Call Trace: | <TASK> | mcba_usb_start drivers/net/can/usb/mcba_usb.c:662 [inline] | mcba_usb_probe+0x8a3/0xc50 drivers/net/can/usb/mcba_usb.c:858 | usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 | call_driver_probe drivers/base/dd.c:517 [inline]

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-11-21	0.06%	0.03%	-0.03%
2	2025-11-18	0.03%	0.06%	+0.03%
3	2025-10-16	—	0.03%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-11-21

0.06%

0.03%

-0.03%

2025-11-18

0.03%

0.06%

+0.03%

2025-10-16

—

0.03%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.5

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

3.6

[email protected]

OS Trackers for CVE-2022-49151

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-49151 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-2022-49151
`redhat`	—	—	https://access.redhat.com/security/cve/CVE-2022-49151
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-49151/
`ubuntu`	medium	CVE-2022-49151 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, ignored 146, released 145, not-affected 115.	https://ubuntu.com/security/CVE-2022-49151

Affected software / configurations for CVE-2022-49151

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 4.12, < 4.14.276	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.238	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.189	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.110	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.33	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 5.16.19	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.17, < 5.17.2	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-49151

URL	Tags
https://git.kernel.org/stable/c/136bed0bfd3bc9c95c88aafff2d22ecb3a919f23	Patch
https://git.kernel.org/stable/c/5598442edc29e8f6f2380e4b471dc1a3fcd80508	Patch
https://git.kernel.org/stable/c/88272b4a37913bdf6f339162a7920bd8e9b49de2	Patch
https://git.kernel.org/stable/c/b48d1bb3f1ca337ad653022aefb5a40a47dfe5cd	Patch
https://git.kernel.org/stable/c/cbd110b8dd7ad763bf413f71c0484116ae9302d4	Patch
https://git.kernel.org/stable/c/ef0acc514123140157b19a9ff2e2de5d91d612bc	Patch
https://git.kernel.org/stable/c/f2ec3cd0f34f8c3f94bc21fbba14868301c9c49d	Patch
https://git.kernel.org/stable/c/fa9c1f14002dc0d5293e16a2007bd89b6e79207b	Patch

URL

CVE-2022-49151 | can: mcba_usb: properly check endpoint type

Exploit prediction scoring system (EPSS) score for CVE-2022-49151

Common vulnerability scoring system (CVSS) metrics for CVE-2022-49151

Weakness enumeration for CVE-2022-49151

OS Trackers for CVE-2022-49151

Affected software / configurations for CVE-2022-49151

References for CVE-2022-49151