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NVD / CVE Program· CNA Linux

CVE-2022-50311: cxl: Fix refcount leak in cxl_calc_capp_routing

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: 0.16% (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 1d09697ff22908ae487fc8c4fbde1811732be523, 2d7b6580384e6d65419933ddc525bd176095da54, 651e8bc9d0418c20a1989b7c078c64c2a6346fa3.

Low priority for now. Upgrade to Linux Linux 1d09697ff22908ae487fc8c4fbde1811732be523, 2d7b6580384e6d65419933ddc525bd176095da54, 651e8bc9d0418c20a1989b7c078c64c2a6346fa3 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: cxl: Fix refcount leak in cxl_calc_capp_routing of_get_next_parent() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. This function only calls of_node_put() in normal path, missing it in the error path. Add missing of_node_put() to avoid refcount leak.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 15, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th 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-2022-50311

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 kernel4.12 and later · before 4.14.303
  • linux linux kernel4.15 and later · before 4.19.270
  • linux linux kernel4.20 and later · before 5.4.229
  • linux linux kernel5.5 and later · before 5.10.163
  • linux linux kernel5.11 and later · before 5.15.86
  • linux linux kernel5.16 and later · before 6.0.16
  • linux linux kernel6.1 and later · before 6.1.2

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

    • 4.12affected
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before c9bebc503881c1391f6c4f820134884adecf1519affected · git
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before ee870f72465015327ad96204b0e92450d04870cdaffected · git
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before f2d60f6ba173cded65081cee690b67802395a479affected · git
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before 81c8bbf5b2b5f0c8030fff1716c00849cda8571aaffected · git
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before 6a310e8db5409676b4b3e6c1f54dff174e4fd04daffected · git
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before 651e8bc9d0418c20a1989b7c078c64c2a6346fa3affected · git
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before 2d7b6580384e6d65419933ddc525bd176095da54affected · git
    • f24be42aab37c6d07c05126673138e06223a6399 and later · before 1d09697ff22908ae487fc8c4fbde1811732be523affected · git
    • before 4.12not affected · semver

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-2022-50309Sep 15, 2025 · media: xilinx: vipp: Fix refcount leak in xvip_graph_dma_init
    22Monitor
  • ← EarlierCVE-2022-50310Sep 15, 2025 · ip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed
    31Monitor
  • Later →CVE-2022-50312Sep 15, 2025 · drivers: serial: jsm: fix some leaks in probe
    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 Linux1d09697ff22908ae487fc8c4fbde1811732be523Vendor (CNA)
Linux Linux2d7b6580384e6d65419933ddc525bd176095da54Vendor (CNA)
Linux Linux651e8bc9d0418c20a1989b7c078c64c2a6346fa3Vendor (CNA)
Linux Linux6a310e8db5409676b4b3e6c1f54dff174e4fd04dVendor (CNA)
Linux Linux81c8bbf5b2b5f0c8030fff1716c00849cda8571aVendor (CNA)
Linux Linuxc9bebc503881c1391f6c4f820134884adecf1519Vendor (CNA)
Linux Linuxee870f72465015327ad96204b0e92450d04870cdVendor (CNA)
Linux Linuxf2d60f6ba173cded65081cee690b67802395a479Vendor (CNA)

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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