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NVD / CVE Program· CNA Linux

CVE-2023-53295: udf: Do not update file length for failed writes to inline files

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: 0.14% (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 256fe4162f8b5a1625b8603ca5f7ff79725bfb47, 5621f7a8139053d0c3c47fb68ee9f602139eb40a, 5a6c373d761f55635e175fa2f407544bae8f583b.

Low priority for now. Upgrade to Linux Linux 256fe4162f8b5a1625b8603ca5f7ff79725bfb47, 5621f7a8139053d0c3c47fb68ee9f602139eb40a, 5a6c373d761f55635e175fa2f407544bae8f583b 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: udf: Do not update file length for failed writes to inline files When write to inline file fails (or happens only partly), we still updated length of inline data as if the whole write succeeded. Fix the update of length of inline data to happen only if the write succeeds.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 16, 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%

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-2023-53295

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 kernelbefore 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

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 5621f7a8139053d0c3c47fb68ee9f602139eb40aaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 5a6c373d761f55635e175fa2f407544bae8f583baffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 7bd8d9e1cf5607ee14407f4060b9a1dbb3c42802affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before eb2133900cac2d2f78befd6be41666cf1a2315d9affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before c5787d77a5c29fffd295d138bd118b334990a567affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 6837910aeb2c9101fc036dcd1b1f32615c20ec1aaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 6d18cedc1ef0caeb1567cab660079e48844ff6d6affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 256fe4162f8b5a1625b8603ca5f7ff79725bfb47affected · git
    • before 2.6.12not 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-2026-31431crypto: 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-2023-53291Sep 16, 2025 · rcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale
    22Monitor
  • ← EarlierCVE-2023-53294Sep 16, 2025 · fs/ntfs3: Fix null-ptr-deref on inode->i_op in ntfs_lookup()
    22Monitor
  • Later →CVE-2023-53296Sep 16, 2025 · sctp: check send stream number after wait_for_sndbuf
    22Monitor

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 Linux256fe4162f8b5a1625b8603ca5f7ff79725bfb47Vendor (CNA)
Linux Linux5621f7a8139053d0c3c47fb68ee9f602139eb40aVendor (CNA)
Linux Linux5a6c373d761f55635e175fa2f407544bae8f583bVendor (CNA)
Linux Linux6837910aeb2c9101fc036dcd1b1f32615c20ec1aVendor (CNA)
Linux Linux6d18cedc1ef0caeb1567cab660079e48844ff6d6Vendor (CNA)
Linux Linux7bd8d9e1cf5607ee14407f4060b9a1dbb3c42802Vendor (CNA)
Linux Linuxc5787d77a5c29fffd295d138bd118b334990a567Vendor (CNA)
Linux Linuxeb2133900cac2d2f78befd6be41666cf1a2315d9Vendor (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.

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