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NVD / CVE Program· CNA Linux

CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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).
  • 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 11f2d0e8be2b5e784ac45fa3da226492c3e506d8, 315dbdd7cdf6aa533829774caaf4d25f1fd20e73, 6aca3dad2145e864dfe4d1060f45eb1bac75dd58; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1.

Low priority for now. Upgrade to Linux Linux 11f2d0e8be2b5e784ac45fa3da226492c3e506d8, 315dbdd7cdf6aa533829774caaf4d25f1fd20e73, 6aca3dad2145e864dfe4d1060f45eb1bac75dd58; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1; cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 5.15.200.1-1 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: virtio-net: ensure the received length does not exceed allocated size In xdp_linearize_page, when reading the following buffers from the ring, we forget to check the received length with the true allocate size. This can lead to an out-of-bound read. This commit adds that missing check.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Jul 25, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 11th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · Linux
8.4
0.6 point gap

CVSS:3.1/AV:L/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-2025-38375

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
debiandebian linux

Affected versions

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

  • debian debian linux11.0
  • linux linux kernel5.5 and later · before 5.10.241
  • linux linux kernel5.11 and later · before 5.15.189
  • linux linux kernel5.16 and later · before 6.1.144
  • linux linux kernel4.14 and later · before 5.4.297
  • linux linux kernel6.7 and later · before 6.12.37
  • linux linux kernel6.13 and later · before 6.15.6
  • linux linux kernel6.2 and later · before 6.6.97
  • linux linux kernel6.16

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

    • 4.14affected
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before 773e95c268b5d859f51f7547559734fd2a57660caffected · git
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before ddc8649d363141fb3371dd81a73e1cb4ef8ed1e1affected · git
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before 982beb7582c193544eb9c6083937ec5ac1c9d651affected · git
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before 6aca3dad2145e864dfe4d1060f45eb1bac75dd58affected · git
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before 80b971be4c37a4d23a7f1abc5ff33dc7733d649baffected · git
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before bc68bc3563344ccdc57d1961457cdeecab8f81efaffected · git
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before 11f2d0e8be2b5e784ac45fa3da226492c3e506d8affected · git
    • 4941d472bf95b4345d6e38906fcf354e74afa311 and later · before 315dbdd7cdf6aa533829774caaf4d25f1fd20e73affected · git
    • before 4.14not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.147-16.1.147-1
Debian:13linuxbefore 6.12.37-16.12.37-1
SUSE:Linux Enterprise Micro 5.2kernel-defaultbefore 5.3.18-150300.59.238.15.3.18-150300.59.238.1
SUSE:Linux Enterprise Micro 5.2kernel-default-basebefore 5.3.18-150300.59.238.1.150300.18.142.15.3.18-150300.59.238.1.150300.18.142.1
SUSE:Linux Enterprise Micro 5.2kernel-rtbefore 5.3.18-150300.238.15.3.18-150300.238.1
SUSE:Linux Enterprise Micro 5.2kernel-source-rtbefore 5.3.18-150300.238.15.3.18-150300.238.1

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-2025-38372Jul 25, 2025 · RDMA/mlx5: Fix unsafe xarray access in implicit ODP handling
    22Monitor
  • ← EarlierCVE-2025-38373Jul 25, 2025 · IB/mlx5: Fix potential deadlock in MR deregistration
    22Monitor
  • Later →CVE-2025-38386Jul 25, 2025 · ACPICA: Refuse to evaluate a method if arguments are missing
    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 Linux11f2d0e8be2b5e784ac45fa3da226492c3e506d8Vendor (CNA)
Linux Linux315dbdd7cdf6aa533829774caaf4d25f1fd20e73Vendor (CNA)
Linux Linux6aca3dad2145e864dfe4d1060f45eb1bac75dd58Vendor (CNA)
Linux Linux773e95c268b5d859f51f7547559734fd2a57660cVendor (CNA)
Linux Linux80b971be4c37a4d23a7f1abc5ff33dc7733d649bVendor (CNA)
Linux Linux982beb7582c193544eb9c6083937ec5ac1c9d651Vendor (CNA)
Linux Linuxbc68bc3563344ccdc57d1961457cdeecab8f81efVendor (CNA)
Linux Linuxddc8649d363141fb3371dd81a73e1cb4ef8ed1e1Vendor (CNA)
azl3 kernel 6.6.96.2-2 on Azure Linux 3.06.6.104.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.05.15.200.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.147-1 · Debian:12Package registry (OSV)
suse:kernel-default5.3.18-150300.59.238.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.238.1.150300.18.142.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)
suse:kernel-rt5.3.18-150300.238.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)
suse:kernel-source-rt5.3.18-150300.238.1 · SUSE:Linux Enterprise Micro 5.2Package 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
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

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

References

Show all references (9 more)

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

All records