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CVE-2022-48656

17
FAUCET Score

CVE-2022-48656 is a refcount leak vulnerability in the Linux kernel's dmaengine subsystem, specifically within the k3-udma-private driver. This flaw affects Linux kernel versions and arises from a missing of_node_put() call, leading to resource exhaustion. It is rated as Medium severity (CVSS 5.5), indicating a local attack vector with low complexity, requiring low privileges, and potentially leading to 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
>= 5.6.0, < 5.10.146CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11.0, < 5.15.71CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16.0, < 5.19.12CPE 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
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 72nd 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

Vendor Advisories (1)

redhatCVE-2022-48656Low

kernel: dmaengine: ti: k3-udma-private: Fix refcount leak bug in of_xudma_dev_get()

Apr 28, 2024

References

git.kernel.org / stable/c/a17df55bf6d536712da6902a83db82b82e67d5a2
Patch
git.kernel.org / stable/c/aa11dae059a439af82bae541b134f8f53ac177b5
Patch
git.kernel.org / stable/c/dd5a6c5a08752b613e83ad2cb5133e72a64b876d
Patch
git.kernel.org / stable/c/f9fdb0b86f087c2b7f6c6168dd0985a3c1eda87e
Patch