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NVD / CVE Program· CNA Linux

CVE-2025-38325: ksmbd: add free_transport ops in ksmbd connection

MediumCVSS 5.5 · v3.1—No exploit Fix available

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: 0.46% (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 3890da762a66191c440b0bd6e3ee45501edbb0c1, 3f3aae77280aad9f5acc6709c596148966f765c7, 52f5a52dc17a4a7b4363ac03fe2c4ef26f020dc6.
  • Severity is disputed: the assigning authority (CNA) scores it 9.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 3890da762a66191c440b0bd6e3ee45501edbb0c1, 3f3aae77280aad9f5acc6709c596148966f765c7, 52f5a52dc17a4a7b4363ac03fe2c4ef26f020dc6 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: ksmbd: add free_transport ops in ksmbd connection free_transport function for tcp connection can be called from smbdirect. It will cause kernel oops. This patch add free_transport ops in ksmbd connection, and add each free_transports for tcp and smbdirect.

Published
Jul 10, 2025
Updated
Aug 5, 2026
EPSS
0.4% · 40th 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 · 0.4%

CNA vs NVD score

NVD
5.5
CNA · Linux
9.8
4.3 point gap

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

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-2025-38325

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

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

    • e59796fc80603bcd8569d4d2e10b213c1918edb4, 6.15affected
    • 1da8bd9a10ecd718692732294d15fd801c0eabb5 and later · before 52f5a52dc17a4a7b4363ac03fe2c4ef26f020dc6affected · git
    • 1aec4d14cf81b7b3e7b69eb1cfa94144eed7138e and later · before 3890da762a66191c440b0bd6e3ee45501edbb0c1affected · git
    • 21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de and later · before 3f3aae77280aad9f5acc6709c596148966f765c7affected · git
    • 21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de and later · before a89f5fae998bdc4d0505306f93844c9ae059d50caffected · git
    • 6.12.26 and later · before 6.12.35affected · semver
    • 6.14.4 and later · before 6.15affected · semver
    • before 6.15not affected · semver
    • 6.12.35 and later · up to and including 6.12.*not affected · semver
    • 6.15.4 and later · up to and including 6.15.*not affected · semver
Affected versions · NVD (5)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.12.26 and later · before 6.12.35
  • linux linux kernel6.14.4 and later · before 6.15
  • linux linux kernel6.15.1 and later · before 6.15.4
  • linux linux kernel6.15
  • linux linux kernel6.16

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.35-16.12.35-1

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-2025-38316Jul 10, 2025 · wifi: mt76: mt7996: avoid NULL pointer dereference in mt7996_set_monitor()
    22Monitor
  • ← EarlierCVE-2025-38319Jul 10, 2025 · drm/amd/pp: Fix potential NULL pointer dereference in atomctrl_initialize_mc_reg_table
    22Monitor
  • Later →CVE-2025-38326Jul 10, 2025 · aoe: clean device rq_list in aoedev_downdev()
    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 Linux3890da762a66191c440b0bd6e3ee45501edbb0c1Vendor (CNA)
Linux Linux3f3aae77280aad9f5acc6709c596148966f765c7Vendor (CNA)
Linux Linux52f5a52dc17a4a7b4363ac03fe2c4ef26f020dc6Vendor (CNA)
Linux Linux6.12.35Vendor (CNA)
Linux Linux6.15Vendor (CNA)
Linux Linuxa89f5fae998bdc4d0505306f93844c9ae059d50cVendor (CNA)
debian:linux6.12.35-1 · Debian:13Package 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

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.

References

Show all references (3 more)

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

All records