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CVE-2022-48820

19
FAUCET Score

CVE-2022-48820 is a refcount leak vulnerability in the Linux kernel's STM32 USB PHY driver, specifically within the stm32_usbphyc_pll_enable() function. This flaw, affecting Linux kernel versions, could lead to a denial of service or information disclosure. With a CVSS score of 7.1 (High), it requires local access and low privileges, but its complexity is low, making it potentially impactful. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.12, < 5.15.24CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.16.10CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
5.17CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
5.17CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
5.17CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
20.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 56th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2022-48820Low

kernel: phy: stm32: fix a refcount leak in stm32_usbphyc_pll_enable()

Jul 16, 2024

References

git.kernel.org / stable/c/0ad1a88fa3eb0ded7798f52b79bc33f75fc9a6d2
Patch
git.kernel.org / stable/c/94b16ca86ab688ed6fad4548f70137f93cf1f0a9
Patch
git.kernel.org / stable/c/cfc826c88a79e22ba5d8001556eb2c7efd8a01b6
Patch