CVE-2022-50156 [High] | Out-of-bounds Write in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: HID: cp2112: prevent a buffer overflow in cp2112_xfer() Smatch warnings: drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'data->block[1]' too small (33 vs 255) drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'buf' too small (64 vs 255) The 'read_length' variable is provided by 'data->block[0]' which comes from user and it(read_length) can take a value between 0-255. Add an upper bound to 'read_length' variable to prevent a buffer overflow in memcpy().

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-04-14	0.04%	0.06%	+0.03%
2	2025-11-21	0.06%	0.04%	-0.02%
3	2025-11-18	—	0.06%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-04-14

0.04%

0.06%

+0.03%

2025-11-21

0.06%

0.04%

-0.02%

2025-11-18

—

0.06%

—

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-2022-50156

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-50156 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-2022-50156
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2022-50156
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-50156/
`ubuntu`	medium	CVE-2022-50156 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 147, not-affected 107, needs-triage 1.	https://ubuntu.com/security/CVE-2022-50156

Affected software / configurations for CVE-2022-50156

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 4.15.1, < 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::::::::
linux	linux_kernel	4.15	cpe:2.3:o:linux:linux_kernel:4.15:-::::::
linux	linux_kernel	4.15	cpe:2.3:o:linux:linux_kernel:4.15:rc6::::::
linux	linux_kernel	4.15	cpe:2.3:o:linux:linux_kernel:4.15:rc7::::::
linux	linux_kernel	4.15	cpe:2.3:o:linux:linux_kernel:4.15:rc8::::::
linux	linux_kernel	4.15	cpe:2.3:o:linux:linux_kernel:4.15:rc9::::::

References for CVE-2022-50156

URL	Tags
https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4	Patch
https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9caf	Patch
https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372d	Patch
https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614	Patch
https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdf	Patch
https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761a	Patch
https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7	Patch

URL

CVE-2022-50156 | HID: cp2112: prevent a buffer overflow in cp2112_xfer()

Exploit prediction scoring system (EPSS) score for CVE-2022-50156

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50156

Weakness enumeration for CVE-2022-50156

OS Trackers for CVE-2022-50156

Affected software / configurations for CVE-2022-50156

References for CVE-2022-50156