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NVD / CVE Program· CNA Linux

CVE-2023-54305: ext4: refuse to create ea block when umounted

—No exploit Fix available

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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 05cbf6ddd9847c7b4f0662c048f195b09405a9d0, 0dc0fa313bb4e86382a3e7125429710d44383196, 116008ada3d0de4991099edaf6b8c2e9cd6f225a.

Low priority for now. Upgrade to Linux Linux 05cbf6ddd9847c7b4f0662c048f195b09405a9d0, 0dc0fa313bb4e86382a3e7125429710d44383196, 116008ada3d0de4991099edaf6b8c2e9cd6f225a 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: ext4: refuse to create ea block when umounted The ea block expansion need to access s_root while it is already set as NULL when umount is triggered. Refuse this request to avoid panic.

Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 11th 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
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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

    • 4.13affected
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before aedea161d031502a423ed1c7597754681a4f8cdaaffected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 21f6a80d9234422e2eb445734b22c78fc5bf6719affected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before a92b67e768bde433b9385cde56c09deb58db269eaffected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 0dc0fa313bb4e86382a3e7125429710d44383196affected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 116008ada3d0de4991099edaf6b8c2e9cd6f225aaffected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 05cbf6ddd9847c7b4f0662c048f195b09405a9d0affected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before a458a8c1d1fc4e10a1813786132b09a3863ad3f2affected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before f31173c19901a96bb2ebf6bcfec8a08df7095c91affected · git
    • before 4.13not 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-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-2023-54303Dec 30, 2025 · bpf: Disable preemption in bpf_perf_event_output
    31Monitor
  • ← EarlierCVE-2023-54304Dec 30, 2025 · firmware: meson_sm: fix to avoid potential NULL pointer dereference
    0Monitor
  • Later →CVE-2023-54307Dec 30, 2025 · ptp_qoriq: fix memory leak in probe()
    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 Linux05cbf6ddd9847c7b4f0662c048f195b09405a9d0Vendor (CNA)
Linux Linux0dc0fa313bb4e86382a3e7125429710d44383196Vendor (CNA)
Linux Linux116008ada3d0de4991099edaf6b8c2e9cd6f225aVendor (CNA)
Linux Linux21f6a80d9234422e2eb445734b22c78fc5bf6719Vendor (CNA)
Linux Linuxa458a8c1d1fc4e10a1813786132b09a3863ad3f2Vendor (CNA)
Linux Linuxa92b67e768bde433b9385cde56c09deb58db269eVendor (CNA)
Linux Linuxaedea161d031502a423ed1c7597754681a4f8cdaVendor (CNA)
Linux Linuxf31173c19901a96bb2ebf6bcfec8a08df7095c91Vendor (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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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.

References

Show all references (7 more)

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

All records