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NVD / CVE Program· CNA Linux

CVE-2022-49351: net: altera: Fix refcount leak in altera_tse_mdio_create

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: 0.27% (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 11ec18b1d8d92b9df307d31950dcba0b3dd7283c, 1fd12298a0e0ca23478c715e672ee64c85670584, 4f850fe0a32c3f1e19b76996a3b1ca32637a14de.

Low priority for now. Upgrade to Linux Linux 11ec18b1d8d92b9df307d31950dcba0b3dd7283c, 1fd12298a0e0ca23478c715e672ee64c85670584, 4f850fe0a32c3f1e19b76996a3b1ca32637a14de 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: net: altera: Fix refcount leak in altera_tse_mdio_create Every iteration of for_each_child_of_node() decrements the reference count of the previous node. When break from a for_each_child_of_node() loop, we need to explicitly call of_node_put() on the child node when not need anymore. Add missing of_node_put() to avoid refcount leak.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 20th 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 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2022-49351

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 kernel3.15 and later · before 4.9.318
  • linux linux kernel4.10 and later · before 4.14.283
  • linux linux kernel4.15 and later · before 4.19.247
  • linux linux kernel4.20 and later · before 5.4.198
  • linux linux kernel5.5 and later · before 5.10.122
  • linux linux kernel5.11 and later · before 5.15.47
  • linux linux kernel5.16 and later · before 5.17.15
  • linux linux kernel5.18 and later · before 5.18.4
  • linux linux kernel5.19

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

    • 3.15affected
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before a013fa884d8738ad8455aa1a843b8c9d80c6c833affected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before 1fd12298a0e0ca23478c715e672ee64c85670584affected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before 5cd0e22fa11f4a21a8c09cc258f20b1474c95801affected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before 8174acbef87b8dd8bf3731eba2a5af1ac857e239affected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before 96bf5ed057df2d157274d4e2079002f9a9404bb8affected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before e31d9ba169860687dba19bdc8fccbfd34077f655affected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before 803b217f1fb49a2dbb2123acdb45111b9c48b8beaffected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before 4f850fe0a32c3f1e19b76996a3b1ca32637a14deaffected · git
    • bbd2190ce96d8fce031f0526c1f970b68adc9d1a and later · before 11ec18b1d8d92b9df307d31950dcba0b3dd7283caffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.5-15.18.5-1

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-2022-49349Feb 26, 2025 · ext4: fix use-after-free in ext4_rename_dir_prepare
    31Monitor
  • ← EarlierCVE-2022-49350Feb 26, 2025 · net: mdio: unexport __init-annotated mdio_bus_init()
    22Monitor
  • Later →CVE-2022-49352Feb 26, 2025 · ext4: fix warning in ext4_handle_inode_extension
    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 Linux11ec18b1d8d92b9df307d31950dcba0b3dd7283cVendor (CNA)
Linux Linux1fd12298a0e0ca23478c715e672ee64c85670584Vendor (CNA)
Linux Linux4f850fe0a32c3f1e19b76996a3b1ca32637a14deVendor (CNA)
Linux Linux5cd0e22fa11f4a21a8c09cc258f20b1474c95801Vendor (CNA)
Linux Linux803b217f1fb49a2dbb2123acdb45111b9c48b8beVendor (CNA)
Linux Linux8174acbef87b8dd8bf3731eba2a5af1ac857e239Vendor (CNA)
Linux Linux96bf5ed057df2d157274d4e2079002f9a9404bb8Vendor (CNA)
Linux Linuxa013fa884d8738ad8455aa1a843b8c9d80c6c833Vendor (CNA)
Linux Linuxe31d9ba169860687dba19bdc8fccbfd34077f655Vendor (CNA)
debian:linux5.18.5-1 · 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 (8 more)

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

All records