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NVD / CVE Program· CNA Linux

CVE-2025-40171: nvmet-fc: move lsop put work to nvmet_fc_ls_req_op

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.47% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 060ecc81240ef9d60d9485a3a5eb55a0d6e7a25c, 11269c08013f4ee8b8f5edc6c56700acb34092d0, 5.15.195.

Low priority for now. Upgrade to Linux Linux 060ecc81240ef9d60d9485a3a5eb55a0d6e7a25c, 11269c08013f4ee8b8f5edc6c56700acb34092d0, 5.15.195 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: nvmet-fc: move lsop put work to nvmet_fc_ls_req_op It’s possible for more than one async command to be in flight from __nvmet_fc_send_ls_req. For each command, a tgtport reference is taken. In the current code, only one put work item is queued at a time, which results in a leaked reference. To fix this, move the work item to the nvmet_fc_ls_req_op struct, which already tracks all resources related to the command.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Nov 12, 2025
Updated
Oct 19, 2026
EPSS
0.4% · 40th percentile
CWE
—

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2025-40171

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.

—

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

    • 1d86f79287206deec36d63b89c741cf542b6cadd, 6.8affected
    • 5e0bc09a52b6169ce90f7ac6e195791adb16cec4 and later · before 11269c08013f4ee8b8f5edc6c56700acb34092d0affected · git
    • 9e6987f8937a7bd7516aa52f25cb7e12c0c92ee8 and later · before a28112cc55013cd8cbd5d36b5115a5b851151bd9affected · git
    • eaf0971fdabf2a93c1429dc6bedf3bbe85dffa30 and later · before 060ecc81240ef9d60d9485a3a5eb55a0d6e7a25caffected · git
    • 710c69dbaccdac312e32931abcb8499c1525d397 and later · before 7331925c247b03b7767b8cd93cfe1b7aa2377850affected · git
    • 710c69dbaccdac312e32931abcb8499c1525d397 and later · before 7a619f8c869117ffed08365b377f66b7e1d941b4affected · git
    • 710c69dbaccdac312e32931abcb8499c1525d397 and later · before db5a5406fb7e5337a074385c7a3e53c77f2c1bd3affected · git
    • 5.15.150 and later · before 5.15.195affected · semver
    • 6.1.80 and later · before 6.1.156affected · semver
    • 6.6.19 and later · before 6.6.112affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.158-16.1.158-1
Debian:13linuxbefore 6.12.57-16.12.57-1
Debian:14linuxbefore 6.17.6-16.17.6-1

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-2025-40169Nov 12, 2025 · bpf: Reject negative offsets for ALU ops
    31Monitor
  • ← EarlierCVE-2025-40170Nov 12, 2025 · net: use dst_dev_rcu() in sk_setup_caps()
    31Monitor
  • Later →CVE-2025-40172Nov 12, 2025 · accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages()
    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 Linux060ecc81240ef9d60d9485a3a5eb55a0d6e7a25cVendor (CNA)
Linux Linux11269c08013f4ee8b8f5edc6c56700acb34092d0Vendor (CNA)
Linux Linux5.15.195Vendor (CNA)
Linux Linux6.1.156Vendor (CNA)
Linux Linux6.6.112Vendor (CNA)
Linux Linux6.8Vendor (CNA)
Linux Linux7331925c247b03b7767b8cd93cfe1b7aa2377850Vendor (CNA)
Linux Linux7a619f8c869117ffed08365b377f66b7e1d941b4Vendor (CNA)
Linux Linuxa28112cc55013cd8cbd5d36b5115a5b851151bd9Vendor (CNA)
Linux Linuxdb5a5406fb7e5337a074385c7a3e53c77f2c1bd3Vendor (CNA)
debian:linux6.1.158-1 · 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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • 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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

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