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NVD / CVE Program· CNA Linux

CVE-2022-49719: irqchip/gic/realview: Fix refcount leak in realview_gic_of_init

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: 0.26% (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 16b603cb8d34c2d917983918db1f88c8b831baaa, 486f68f85085d9b16ae097679b1486dcb1b6eb69, 56526c3883fc7a1f5898b1d40a02c8b8685a5d92.

Low priority for now. Upgrade to Linux Linux 16b603cb8d34c2d917983918db1f88c8b831baaa, 486f68f85085d9b16ae097679b1486dcb1b6eb69, 56526c3883fc7a1f5898b1d40a02c8b8685a5d92 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: irqchip/gic/realview: Fix refcount leak in realview_gic_of_init of_find_matching_node_and_match() returns a node pointer with refcount incremented, we should use of_node_put() on it 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% · 18th 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-2022-49719

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 kernel4.6 and later · before 4.9.320
  • linux linux kernel4.10 and later · before 4.14.285
  • linux linux kernel4.15 and later · before 4.19.249
  • linux linux kernel4.20 and later · before 5.4.200
  • linux linux kernel5.5 and later · before 5.10.124
  • linux linux kernel5.11 and later · before 5.15.49
  • linux linux kernel5.16 and later · before 5.18.6
  • 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

    • 4.6affected
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before 87da903ce632d5689bef66d56ee5dae700d82104affected · git
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before 486f68f85085d9b16ae097679b1486dcb1b6eb69affected · git
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before b634af84bc1edece4e63317b0ad95618dd3a8693affected · git
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before 56526c3883fc7a1f5898b1d40a02c8b8685a5d92affected · git
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before e52a58b79f11755ea7e877015c4a1704303fa55faffected · git
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before 5d38720661a4b9c87705c206a6081177ffb8ec1daffected · git
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before 16b603cb8d34c2d917983918db1f88c8b831baaaaffected · git
    • 82b0a434b436f5da69ddd24bd6a6fa5dc4484310 and later · before f4b98e314888cc51486421bcf6d52852452ea48baffected · git
    • before 4.6not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.14-15.18.14-1

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-2022-49717Feb 26, 2025 · irqchip/apple-aic: Fix refcount leak in build_fiq_affinity
    22Monitor
  • ← EarlierCVE-2022-49718Feb 26, 2025 · irqchip/apple-aic: Fix refcount leak in aic_of_ic_init
    22Monitor
  • Later →CVE-2022-49720Feb 26, 2025 · block: Fix handling of offline queues in blk_mq_alloc_request_hctx()
    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 Linux16b603cb8d34c2d917983918db1f88c8b831baaaVendor (CNA)
Linux Linux486f68f85085d9b16ae097679b1486dcb1b6eb69Vendor (CNA)
Linux Linux56526c3883fc7a1f5898b1d40a02c8b8685a5d92Vendor (CNA)
Linux Linux5d38720661a4b9c87705c206a6081177ffb8ec1dVendor (CNA)
Linux Linux87da903ce632d5689bef66d56ee5dae700d82104Vendor (CNA)
Linux Linuxb634af84bc1edece4e63317b0ad95618dd3a8693Vendor (CNA)
Linux Linuxe52a58b79f11755ea7e877015c4a1704303fa55fVendor (CNA)
Linux Linuxf4b98e314888cc51486421bcf6d52852452ea48bVendor (CNA)
debian:linux5.18.14-1 · 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 (7 more)

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

All records