CVE-2022-49715

Local service interruption via device-node refcount leak

Published Feb 26, 2025 · Updated May 11, 2026

Reference-count leak in Linux kernel 4.7 through 5.19-rc2 allows local users to interrupt service during GICv3 PPI setup. The gic_populate_ppi_partitions function retains each device-tree node reference returned by of_find_node_by_phandle() instead of releasing it with of_node_put(). The public record does not describe a repeatable user-controlled trigger, so exposure depends on reaching GICv3 private-peripheral interrupt partition initialization.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference-count leak in Linux kernel 4.7 through 5.19-rc2 allows local users to interrupt service during GICv3 PPI setup. The gic_populate_ppi_partitions function retains each device-tree node reference returned by of_find_node_by_phandle() instead of releasing it with of_node_put(). The public record does not describe a repeatable user-controlled trigger, so exposure depends on reaching GICv3 private-peripheral interrupt partition initialization.

The record

CVE
CVE-2022-49715
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.7
  2. Affected versionversion=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <506a88a5bf261d76a5214c0338a320f2214c67ac
  3. Affected versionversion=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <8d884c08eeb83142a7173cb46bcff0434ec42cf1
  4. Affected versionversion=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <c136c2924a59a399aa789858cfb320d481964fb7
  5. Affected versionversion=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <cc5984cf270b69d03f9f4b27063e535036c659e9
  6. Affected versionversion=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <e824482e2c5edacc961b7dd30a92fd47606c3036
  7. Affected versionversion=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <fa1ad9d4cc47ca2470cd904ad4519f05d7e43a2b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.7; version=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <506a88a5bf261d76a5214c0338a320f2214c67ac; version=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <8d884c08eeb83142a7173cb46bcff0434ec42cf1; version=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <c136c2924a59a399aa789858cfb320d481964fb7; version=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <cc5984cf270b69d03f9f4b27063e535036c659e9; version=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <e824482e2c5edacc961b7dd30a92fd47606c3036; version=e3825ba1af3a27d7522c9f5f929f5a13b8b138ae <fa1ad9d4cc47ca2470cd904ad4519f05d7e43a2b

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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