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CVE-2023-53191· NVD / CVE Program· CNA Linux

irqchip/alpine-msi: Fix refcount leak in alpine_msix_init_domains

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 071d068b89e95d1b078aa6bbcb9d0961b77d6aa1, 5fbf2cc39b62a4afe44f3d42ee3dcf8f012c1926, 65e30bd1310d90b794c377bf405394157854aa30.

Low priority for now. Upgrade to Linux Linux 071d068b89e95d1b078aa6bbcb9d0961b77d6aa1, 5fbf2cc39b62a4afe44f3d42ee3dcf8f012c1926, 65e30bd1310d90b794c377bf405394157854aa30 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/alpine-msi: Fix refcount leak in alpine_msix_init_domains of_irq_find_parent() returns a node pointer with refcount incremented, We should use of_node_put() on it when not needed anymore. 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% · 4th 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-2023-53191

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 4.14.308
  • linux linux kernel4.15 and later · before 4.19.276
  • linux linux kernel4.20 and later · before 5.4.235
  • linux linux kernel5.5 and later · before 5.10.173
  • linux linux kernel5.11 and later · before 5.15.99
  • linux linux kernel5.16 and later · before 6.1.16
  • linux linux kernel6.2 and later · before 6.2.3

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
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before eef04516f0c317ce80502c1d6b0d06235a87cd8faffected · git
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before eef09f786df4b34b97557929287c4e5a83bbf09baffected · git
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before 9e79ac4f70fd51243e1c6108d4b0baf16cfde99caffected · git
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before c9aaf4efe1f02b2fef21a69fb3652f5ad12a5710affected · git
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before d6c66c46889752fa4962c6388516f7ab66a8d6a1affected · git
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before 65e30bd1310d90b794c377bf405394157854aa30affected · git
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before 5fbf2cc39b62a4afe44f3d42ee3dcf8f012c1926affected · git
    • e6b78f2c3e14a9e3a909be3e6ec305d9f1cbabbd and later · before 071d068b89e95d1b078aa6bbcb9d0961b77d6aa1affected · 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 6.1.20-16.1.20-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2023-53188Sep 15, 2025 · net: openvswitch: fix race on port output
    18Monitor
  • ← EarlierCVE-2023-53190Sep 15, 2025 · vxlan: Fix memory leaks in error path
    22Monitor
  • Later →CVE-2023-53192Sep 15, 2025 · vxlan: Fix nexthop hash size
    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 Linux071d068b89e95d1b078aa6bbcb9d0961b77d6aa1Vendor (CNA)
Linux Linux5fbf2cc39b62a4afe44f3d42ee3dcf8f012c1926Vendor (CNA)
Linux Linux65e30bd1310d90b794c377bf405394157854aa30Vendor (CNA)
Linux Linux9e79ac4f70fd51243e1c6108d4b0baf16cfde99cVendor (CNA)
Linux Linuxc9aaf4efe1f02b2fef21a69fb3652f5ad12a5710Vendor (CNA)
Linux Linuxd6c66c46889752fa4962c6388516f7ab66a8d6a1Vendor (CNA)
Linux Linuxeef04516f0c317ce80502c1d6b0d06235a87cd8fVendor (CNA)
Linux Linuxeef09f786df4b34b97557929287c4e5a83bbf09bVendor (CNA)
debian:linux6.1.20-1 · 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.

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