CVE-2022-50244 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter() If device_register() fails in cxl_pci_afu|adapter(), the device is not added, device_unregister() can not be called in the error path, otherwise it will cause a null-ptr-deref because of removing not added device. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So split device_unregister() into device_del() and put_device(), then goes to put dev when register fails.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-09-16	—	0.03%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-09-16

—

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-2022-50244

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-50244 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-2022-50244
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2022-50244
`suse`	medium	CVE-2022-50244 severity moderate: SUSE including 265 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 405 product×package rows across 42 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-HPC-BYOS, … (42 product lines)): Known Affected 231, Known Not Affected 104, Fixed 70.	https://www.suse.com/security/cve/CVE-2022-50244/
`ubuntu`	medium	CVE-2022-50244 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1414 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 1017, ignored 160, released 150, not-affected 82, needed 4, needs-triage 1.	https://ubuntu.com/security/CVE-2022-50244

Affected software / configurations for CVE-2022-50244

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 3.18, < 4.9.337	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.10, < 4.14.303	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.270	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.229	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.163	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.86	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.0.16	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.1, < 6.1.2	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-50244

URL	Tags
https://git.kernel.org/stable/c/02cd3032b154fa02fdf90e7467abaeed889330b2	Patch
https://git.kernel.org/stable/c/0f63c0ddc2ea20d783d29243f4dbe0f9e95dfdec	Patch
https://git.kernel.org/stable/c/139abd4c626a6f7ce02789ed5f73aa2256e0542b	Patch
https://git.kernel.org/stable/c/22511eefa61db26e12c97dd7ada3071dbdfcb004	Patch
https://git.kernel.org/stable/c/2f5fd31b2f24b9b8a80ab566fd8c4e1e94cb4339	Patch
https://git.kernel.org/stable/c/361412dae1690d4b5df6f92fc943cdc773c95cbc	Patch
https://git.kernel.org/stable/c/82e5481428faf11c79b9c094dd24a1849bbf64ac	Patch
https://git.kernel.org/stable/c/82e68432668ae75b4c814d160f6987ecb0681273	Patch
https://git.kernel.org/stable/c/c4b2e35df919d99bbbed033c2fa0b607f9f463b5	Patch

URL

CVE-2022-50244 | cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()

Exploit prediction scoring system (EPSS) score for CVE-2022-50244

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50244

Weakness enumeration for CVE-2022-50244

OS Trackers for CVE-2022-50244

Affected software / configurations for CVE-2022-50244

References for CVE-2022-50244