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NVD / CVE Program· CNA Linux

CVE-2022-50033: usb: host: ohci-ppc-of: 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 0334d23c56ecf1ee1563bb83e29cc5a51ed7fb4e, 0fc62bbc95319bbd330e3645afc7c286acec9ef8, 403132881e66db7aa98b55c6655daedd80d407fd.

Low priority for now. Upgrade to Linux Linux 0334d23c56ecf1ee1563bb83e29cc5a51ed7fb4e, 0fc62bbc95319bbd330e3645afc7c286acec9ef8, 403132881e66db7aa98b55c6655daedd80d407fd 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: host: ohci-ppc-of: Fix refcount leak bug In ohci_hcd_ppc_of_probe(), of_find_compatible_node() 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.

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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 kernel2.6.29 and later · before 4.9.326
  • linux linux kernel4.10 and later · before 4.14.291
  • linux linux kernel4.15 and later · before 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

    • 2.6.29affected
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before fe6fe64403710287f0ae61a516954d8a4f7c9e3faffected · git
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before c5c5bd5cdcc6dc9f75f53d1c89af463d39a2bb96affected · git
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before ec583e300aee9f152a64911445092d18e1c36729affected · git
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before 0334d23c56ecf1ee1563bb83e29cc5a51ed7fb4eaffected · git
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before cb5dd65e889163e723df1c2f02288cc527a57785affected · git
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before 0fc62bbc95319bbd330e3645afc7c286acec9ef8affected · git
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before 403132881e66db7aa98b55c6655daedd80d407fdaffected · git
    • 796bcae7361c28cf825780f6f1aac9dd3411394e and later · before 40a959d7042bb7711e404ad2318b30e9f92c6b9baffected · git
    • before 2.6.29not 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
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.269.14.12.14-122.269.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_71before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.269.14.12.14-122.269.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.269.14.12.14-122.269.1

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-2022-50030Jun 18, 2025 · scsi: lpfc: Prevent buffer overflow crashes in debugfs with malformed user input
    31Monitor
  • ← EarlierCVE-2022-50032Jun 18, 2025 · usb: renesas: Fix refcount leak bug
    22Monitor
  • Later →CVE-2022-50034Jun 18, 2025 · usb: cdns3 fix use-after-free at workaround 2
    31Monitor

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 Linux0334d23c56ecf1ee1563bb83e29cc5a51ed7fb4eVendor (CNA)
Linux Linux0fc62bbc95319bbd330e3645afc7c286acec9ef8Vendor (CNA)
Linux Linux403132881e66db7aa98b55c6655daedd80d407fdVendor (CNA)
Linux Linux40a959d7042bb7711e404ad2318b30e9f92c6b9bVendor (CNA)
Linux Linuxc5c5bd5cdcc6dc9f75f53d1c89af463d39a2bb96Vendor (CNA)
Linux Linuxcb5dd65e889163e723df1c2f02288cc527a57785Vendor (CNA)
Linux Linuxec583e300aee9f152a64911445092d18e1c36729Vendor (CNA)
Linux Linuxfe6fe64403710287f0ae61a516954d8a4f7c9e3fVendor (CNA)
debian:linux6.0.2-1 · Debian:12Package registry (OSV)
suse:kernel-default4.12.14-122.269.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.269.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-syms4.12.14-122.269.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_711-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package 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 (7 more)

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

All records