CVE-2022-50544 [Medium] | Information Disclosure in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info() xhci_alloc_stream_info() allocates stream context array for stream_info ->stream_ctx_array with xhci_alloc_stream_ctx(). When some error occurs, stream_info->stream_ctx_array is not released, which will lead to a memory leak. We can fix it by releasing the stream_info->stream_ctx_array with xhci_free_stream_ctx() on the error path to avoid the potential memory leak.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.03%	0.15%	+0.11%
2	2025-10-08	—	0.03%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.03%

0.15%

+0.11%

2025-10-08

—

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-2022-50544

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-50544 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-2022-50544
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2022-50544
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-50544/
`ubuntu`	medium	CVE-2022-50544 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 161, released 148, not-affected 82, needed 5, needs-triage 1.	https://ubuntu.com/security/CVE-2022-50544

Affected software / configurations for CVE-2022-50544

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 2.6.35, < 4.9.331	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.10, < 4.14.296	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.262	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.220	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.150	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.75	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 5.19.17	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.0, < 6.0.3	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-50544

URL	Tags
https://git.kernel.org/stable/c/782c873f8e7686f5b3c47e8b099f7e08c3dd1fdc	Patch
https://git.kernel.org/stable/c/7e271f42a5cc3768cd2622b929ba66859ae21f97	Patch
https://git.kernel.org/stable/c/7fc6bab3413e6a42bb1264ff7c9149808c93a4c7	Patch
https://git.kernel.org/stable/c/91271a3e772e180bbb8afb114c72fd294a02f93d	Patch
https://git.kernel.org/stable/c/9fa81cbd2dd300aa8fe9bac70e068b9a11cbb144	Patch
https://git.kernel.org/stable/c/a40ad475236022f3432880e3091c380e46e71a71	Patch
https://git.kernel.org/stable/c/ddab9fe76296840aad686c66888a9c1dfdbff5ff	Patch
https://git.kernel.org/stable/c/e702de2f5c893bf2cdb0152191f99a6ad1411823	Patch
https://git.kernel.org/stable/c/fcd594da0b5955119d9707e4e0a8d0fb1c969101	Patch

URL

CVE-2022-50544 | usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()

Exploit prediction scoring system (EPSS) score for CVE-2022-50544

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50544

Weakness enumeration for CVE-2022-50544

OS Trackers for CVE-2022-50544

Affected software / configurations for CVE-2022-50544

References for CVE-2022-50544