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NVD / CVE Program· CNA Linux

CVE-2023-53856: of: overlay: Call of_changeset_init() early

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 01bb96ad38089f5cc6de7746dac13437d35eb1dc, 3fb210cd521c9efcb211e9f5ce40fc907200bf13, a9515ff4fb142b690a0d2b58782b15903b990dba.

Low priority for now. Upgrade to Linux Linux 01bb96ad38089f5cc6de7746dac13437d35eb1dc, 3fb210cd521c9efcb211e9f5ce40fc907200bf13, a9515ff4fb142b690a0d2b58782b15903b990dba 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: of: overlay: Call of_changeset_init() early When of_overlay_fdt_apply() fails, the changeset may be partially applied, and the caller is still expected to call of_overlay_remove() to clean up this partial state. However, of_overlay_apply() calls of_resolve_phandles() before init_overlay_changeset(). Hence if the overlay fails to apply due to an unresolved symbol, the overlay_changeset.cset.entries list is still uninitialized, and cleanup will crash with a NULL-pointer dereference in overlay_removal_is_ok(). Fix this by moving the call to of_changeset_init() from init_overlay_changeset() to of_overlay_fdt_apply(), where all other early initialization is done.

—No exploit Fix available
Published
Dec 9, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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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.

—

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

    • 4.15affected
    • f948d6d8b792bb90041edc12eac35faf83030994 and later · before 01bb96ad38089f5cc6de7746dac13437d35eb1dcaffected · git
    • f948d6d8b792bb90041edc12eac35faf83030994 and later · before 3fb210cd521c9efcb211e9f5ce40fc907200bf13affected · git
    • f948d6d8b792bb90041edc12eac35faf83030994 and later · before be86241bf5d1efd16d8a7231c13b33459c5d755daffected · git
    • f948d6d8b792bb90041edc12eac35faf83030994 and later · before c403c81b577a67fe9ec6a2e89d143256487be50faffected · git
    • f948d6d8b792bb90041edc12eac35faf83030994 and later · before a9515ff4fb142b690a0d2b58782b15903b990dbaaffected · git
    • before 4.15not affected · semver
    • 5.15.132 and later · up to and including 5.15.*not affected · semver
    • 6.1.53 and later · up to and including 6.1.*not affected · semver
    • 6.4.16 and later · up to and including 6.4.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.55-16.1.55-1
Debian:13linuxbefore 6.5.3-16.5.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-53854Dec 9, 2025 · ASoC: mediatek: mt8186: Fix use-after-free in driver remove path
    0Monitor
  • ← EarlierCVE-2023-53855Dec 9, 2025 · net: dsa: ocelot: call dsa_tag_8021q_unregister() under rtnl_lock() on driver remove
    0Monitor
  • Later →CVE-2023-53858Dec 9, 2025 · tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error
    0Monitor

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 Linux01bb96ad38089f5cc6de7746dac13437d35eb1dcVendor (CNA)
Linux Linux3fb210cd521c9efcb211e9f5ce40fc907200bf13Vendor (CNA)
Linux Linuxa9515ff4fb142b690a0d2b58782b15903b990dbaVendor (CNA)
Linux Linuxbe86241bf5d1efd16d8a7231c13b33459c5d755dVendor (CNA)
Linux Linuxc403c81b577a67fe9ec6a2e89d143256487be50fVendor (CNA)
debian:linux6.1.55-1 · 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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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 (4 more)

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

All records