CVE-2022-50245 [High] | Use-After-Free in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: rapidio: fix possible UAF when kfifo_alloc() fails If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free priv. But priv is still in the chdev->file_list, then list traversal may cause UAF. This fixes the following smatch warning: drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list

#	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
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-2022-50245

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-50245 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-2022-50245
`redhat`	—	—	https://access.redhat.com/security/cve/CVE-2022-50245
`suse`	medium	CVE-2022-50245 severity moderate: SUSE including 25 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 268 product×package rows across 54 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Availability Extension 15 SP7, … (54 product lines)): Known Not Affected 268.	https://www.suse.com/security/cve/CVE-2022-50245/
`ubuntu`	medium	CVE-2022-50245 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 158, released 150, not-affected 88, needs-triage 1.	https://ubuntu.com/security/CVE-2022-50245

Affected software / configurations for CVE-2022-50245

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 4.6, < 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-2022-50245

URL	Tags
https://git.kernel.org/stable/c/02d7d89f816951e0862147d751b1150d67aaebdd	Patch
https://git.kernel.org/stable/c/2a6c75adf8192f07ddcdd4a1a13488c890a73919	Patch
https://git.kernel.org/stable/c/2ba06e57f933f0eac242e8b389433da1cc00d4d5	Patch
https://git.kernel.org/stable/c/2dfd60724d271a6ab99f93f40f38f2ced1ddbb87	Patch
https://git.kernel.org/stable/c/2f5cc7fd73fd6253cc71214f0dd499cc62feb469	Patch
https://git.kernel.org/stable/c/311b488405ac45af46756b1c8f1d27007b68b07e	Patch
https://git.kernel.org/stable/c/5ee850645e42f541ce1ea8130c2b27cc495f965c	Patch
https://git.kernel.org/stable/c/a253dde0403a153075ffb254f6f7b2635e49e97a	Patch
https://git.kernel.org/stable/c/cb87af2c19c0993f6e21f75b963a5599c5a73e76	Patch

URL

CVE-2022-50245 | rapidio: fix possible UAF when kfifo_alloc() fails

Exploit prediction scoring system (EPSS) score for CVE-2022-50245

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50245

Weakness enumeration for CVE-2022-50245

OS Trackers for CVE-2022-50245

Affected software / configurations for CVE-2022-50245

References for CVE-2022-50245