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NVD / CVE Program· CNA Linux

CVE-2022-50032: usb: renesas: Fix refcount leak bug

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.19% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 36b18b777dece704b7c2e9e7947ca41a9b0fb009, 5c4b699193eba51f1bbf462d758d66f545fddd35, 9790a5a4f07f38a5add85ec58c44797d3a7c3677.

Low priority for now. Upgrade to Linux Linux 36b18b777dece704b7c2e9e7947ca41a9b0fb009, 5c4b699193eba51f1bbf462d758d66f545fddd35, 9790a5a4f07f38a5add85ec58c44797d3a7c3677 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: usb: renesas: Fix refcount leak bug In usbhs_rza1_hardware_init(), of_find_node_by_name() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jun 18, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 9th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-50032

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 4.19.256
  • linux linux kernel4.20 and later · before 5.4.211
  • linux linux kernel5.5 and later · before 5.10.138
  • linux linux kernel5.11 and later · before 5.15.63
  • linux linux kernel5.16 and later · before 5.19.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.16affected
    • aec2927b5944df70bca4bdeea6c4e7c3195dc37a and later · before 36b18b777dece704b7c2e9e7947ca41a9b0fb009affected · git
    • aec2927b5944df70bca4bdeea6c4e7c3195dc37a and later · before cfa8f707a58d68b2341a9dd0b33cf048f0628b4daffected · git
    • aec2927b5944df70bca4bdeea6c4e7c3195dc37a and later · before 9790a5a4f07f38a5add85ec58c44797d3a7c3677affected · git
    • aec2927b5944df70bca4bdeea6c4e7c3195dc37a and later · before fbdbd61a36d887e00114321c6758e359e9573a8eaffected · git
    • aec2927b5944df70bca4bdeea6c4e7c3195dc37a and later · before 5c4b699193eba51f1bbf462d758d66f545fddd35affected · git
    • aec2927b5944df70bca4bdeea6c4e7c3195dc37a and later · before 9d6d5303c39b8bc182475b22f45504106a07f086affected · git
    • before 4.16not affected · semver
    • 4.19.256 and later · up to and including 4.19.*not affected · semver
    • 5.4.211 and later · up to and including 5.4.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.2-16.0.2-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50029Jun 18, 2025 · clk: qcom: ipq8074: dont disable gcc_sleep_clk_src
    22Monitor
  • ← EarlierCVE-2022-50030Jun 18, 2025 · scsi: lpfc: Prevent buffer overflow crashes in debugfs with malformed user input
    31Monitor
  • Later →CVE-2022-50033Jun 18, 2025 · usb: host: ohci-ppc-of: Fix refcount leak bug
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux36b18b777dece704b7c2e9e7947ca41a9b0fb009Vendor (CNA)
Linux Linux5c4b699193eba51f1bbf462d758d66f545fddd35Vendor (CNA)
Linux Linux9790a5a4f07f38a5add85ec58c44797d3a7c3677Vendor (CNA)
Linux Linux9d6d5303c39b8bc182475b22f45504106a07f086Vendor (CNA)
Linux Linuxcfa8f707a58d68b2341a9dd0b33cf048f0628b4dVendor (CNA)
Linux Linuxfbdbd61a36d887e00114321c6758e359e9573a8eVendor (CNA)
debian:linux6.0.2-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records