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CVE-2022-50139

17
FAUCET Score

CVE-2022-50139 describes a reference count leak in the Linux kernel's Aspeed Virtual Hub (ast_vhub) USB driver, specifically within the ast_vhub_init_desc() function. This vulnerability affects Linux kernel versions and could lead to a denial of service. With a CVSS score of 5.5 (Medium), it requires local access and low privileges, with low attack complexity, to cause high availability impact. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.8, < 5.10.137CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.61CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.18.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.19, < 5.19.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.16%
Probability of exploitation in next 30 days
EPSS Percentile
5.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 33rd percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-284.11.1.el9_2
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-50139Low

kernel: usb: aspeed-vhub: Fix refcount leak bug in ast_vhub_init_desc()

Jun 18, 2025

References

git.kernel.org / stable/c/0e0a40c803643f4edc30f0660f2f3bea4d57a99a
Patch
git.kernel.org / stable/c/220fafb4ed04187e9c17be4152da5a7f2ffbdd8c
Patch
git.kernel.org / stable/c/3503305225ca24c3229414c769323fb8bf39b4bf
Patch
git.kernel.org / stable/c/4070f3c83cd28267f469a59751480ad39435f26a
Patch
git.kernel.org / stable/c/e6db5780c2bf6e23be7b315809ef349b4b4f2213
Patch