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NVD / CVE Program· CNA Linux

CVE-2023-53118: scsi: core: Fix a procfs host directory removal regression

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: 0.20% (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 2a764d55e938743efa7c2cba7305633bcf227f09, 4.20, 5.10.176.

Low priority for now. Upgrade to Linux Linux 2a764d55e938743efa7c2cba7305633bcf227f09, 4.20, 5.10.176 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: scsi: core: Fix a procfs host directory removal regression scsi_proc_hostdir_rm() decreases a reference counter and hence must only be called once per host that is removed. This change does not require a scsi_add_host_with_dma() change since scsi_add_host_with_dma() will return 0 (success) if scsi_proc_host_add() is called.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 2, 2025
Updated
Nov 5, 2026
EPSS
0.2% · 10th 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 · 0.2%

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-2023-53118

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 kernel4.19.278 and later · before 4.20
  • linux linux kernel5.10.175
  • linux linux kernel5.15.103
  • linux linux kernel5.4.237
  • linux linux kernel6.1.20
  • linux linux kernel6.2.7
  • linux linux kernel6.3

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

    • 13daafe1e209b03e9bda16ff2bd2b2da145a139baffected
    • 891a3cba425cf483d96facca55aebd6ff1da4338 and later · before 88c3d3bb6469cea929ac68fd326bdcbefcdfdd83affected · git
    • 6b223e32d66ca9db1f252f433514783d8b22a8e1 and later · before 68c665bb185037e7eb66fb792c61da9d7151e99caffected · git
    • e471e928de97b00f297ad1015cc14f9459765713 and later · before 2a764d55e938743efa7c2cba7305633bcf227f09affected · git
    • 17e98a5ede81b7696bec421f7afa2dfe467f5e6b and later · before 7e0ae8667fcdd99d1756922e1140cac75f5fa279affected · git
    • 1ec363599f8346d5a8d08c71a0d9860d6c420ec0 and later · before 73f030d4ef6d1ad17f824a0a2eb637ef7a9c7d51affected · git
    • fc663711b94468f4e1427ebe289c9f05669699c9 and later · before be03df3d4bfe7e8866d4aa43d62e648ffe884f5faffected · git
    • 4.19.278 and later · before 4.20affected · semver
    • 5.4.237 and later · before 5.4.238affected · semver
    • 5.10.175 and later · before 5.10.176affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.25-16.1.25-1

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-2023-53115May 2, 2025 · scsi: mpi3mr: Fix memory leaks in mpi3mr_init_ioc()
    22Monitor
  • ← EarlierCVE-2023-53116May 2, 2025 · nvmet: avoid potential UAF in nvmet_req_complete()
    31Monitor
  • Later →CVE-2023-53120May 2, 2025 · scsi: mpi3mr: Fix config page DMA memory leak
    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 Linux2a764d55e938743efa7c2cba7305633bcf227f09Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux5.10.176Vendor (CNA)
Linux Linux5.15.104Vendor (CNA)
Linux Linux5.4.238Vendor (CNA)
Linux Linux6.1.21Vendor (CNA)
Linux Linux6.2.8Vendor (CNA)
Linux Linux68c665bb185037e7eb66fb792c61da9d7151e99cVendor (CNA)
Linux Linux73f030d4ef6d1ad17f824a0a2eb637ef7a9c7d51Vendor (CNA)
Linux Linux7e0ae8667fcdd99d1756922e1140cac75f5fa279Vendor (CNA)
Linux Linux88c3d3bb6469cea929ac68fd326bdcbefcdfdd83Vendor (CNA)
Linux Linuxbe03df3d4bfe7e8866d4aa43d62e648ffe884f5fVendor (CNA)
debian:linux6.1.25-1 · 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. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

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

All records