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NVD / CVE Program· CNA Linux

CVE-2025-39760: usb: core: config: Prevent OOB read in SS endpoint companion parsing

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.17% (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 058ad2b722812708fe90567875704ae36563e33b, 4fe6f472f0beef4281e6f03bc38a910a33be663f, 5badd56c711e2c8371d1670f9bd486697575423c; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1.

Low priority for now. Upgrade to Linux Linux 058ad2b722812708fe90567875704ae36563e33b, 4fe6f472f0beef4281e6f03bc38a910a33be663f, 5badd56c711e2c8371d1670f9bd486697575423c; azl3 kernel 6.6.96.2-2 on Azure Linux 3.0 6.6.104.2-1 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: usb: core: config: Prevent OOB read in SS endpoint companion parsing usb_parse_ss_endpoint_companion() checks descriptor type before length, enabling a potentially odd read outside of the buffer size. Fix this up by checking the size first before looking at any of the fields in the descriptor.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Sep 11, 2025
Updated
Oct 19, 2026
EPSS
0.1% · 7th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 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-2025-39760

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 kernel5.11 and later · before 5.15.190
  • linux linux kernel5.16 and later · before 6.1.149
  • linux linux kernel6.2 and later · before 6.6.103
  • linux linux kernel2.6.35 and later · before 5.10.241
  • linux linux kernel6.13 and later · before 6.15.11
  • linux linux kernel6.16 and later · before 6.16.2
  • linux linux kernel6.7 and later · before 6.12.43

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

    • 2.6.35affected
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before 5c3097ede7835d3caf6543eb70ff689af4550cd2affected · git
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before 058ad2b722812708fe90567875704ae36563e33baffected · git
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before b10e0f868067c6f25bbfabdcf3e1e6432c24ca55affected · git
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before 5badd56c711e2c8371d1670f9bd486697575423caffected · git
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before 9512510cee7d1becdb0e9413fdd3ab783e4e30eeaffected · git
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before 4fe6f472f0beef4281e6f03bc38a910a33be663faffected · git
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before 9843bcb187cb933861f7805022e6873905f669e4affected · git
    • 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 and later · before cf16f408364efd8a68f39011a3b073c83a03612daffected · git
    • before 2.6.35not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-124.43.1.el10_16.12.0-124.43.1.el10_1
AlmaLinux:10kernel-docbefore 6.12.0-124.43.1.el10_16.12.0-124.43.1.el10_1
AlmaLinux:8bpftoolbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernelbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-corebefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-cross-headersbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-debugbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-debug-corebefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-debug-develbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-develbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-docbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-headersbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-modulesbefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-modules-extrabefore 4.18.0-553.100.1.el8_104.18.0-553.100.1.el8_10
AlmaLinux:8kernel-rtbefore 4.18.0-553.100.1.rt7.441.el8_104.18.0-553.100.1.rt7.441.el8_10
AlmaLinux:8kernel-rt-corebefore 4.18.0-553.100.1.rt7.441.el8_104.18.0-553.100.1.rt7.441.el8_10
AlmaLinux:8kernel-rt-debugbefore 4.18.0-553.100.1.rt7.441.el8_104.18.0-553.100.1.rt7.441.el8_10
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-553.100.1.rt7.441.el8_104.18.0-553.100.1.rt7.441.el8_10
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-553.100.1.rt7.441.el8_104.18.0-553.100.1.rt7.441.el8_10
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-553.100.1.rt7.441.el8_104.18.0-553.100.1.rt7.441.el8_10
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-553.100.1.rt7.441.el8_104.18.0-553.100.1.rt7.441.el8_10

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-39758Sep 11, 2025 · RDMA/siw: Fix the sendmsg byte count in siw_tcp_sendpages
    22Monitor
  • ← EarlierCVE-2025-39759Sep 11, 2025 · btrfs: qgroup: fix race between quota disable and quota rescan ioctl
    28Monitor
  • Later →CVE-2025-39761Sep 11, 2025 · wifi: ath12k: Decrement TID on RX peer frag setup error handling
    28Monitor

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 Linux058ad2b722812708fe90567875704ae36563e33bVendor (CNA)
Linux Linux4fe6f472f0beef4281e6f03bc38a910a33be663fVendor (CNA)
Linux Linux5badd56c711e2c8371d1670f9bd486697575423cVendor (CNA)
Linux Linux5c3097ede7835d3caf6543eb70ff689af4550cd2Vendor (CNA)
Linux Linux9512510cee7d1becdb0e9413fdd3ab783e4e30eeVendor (CNA)
Linux Linux9843bcb187cb933861f7805022e6873905f669e4Vendor (CNA)
Linux Linuxb10e0f868067c6f25bbfabdcf3e1e6432c24ca55Vendor (CNA)
Linux Linuxcf16f408364efd8a68f39011a3b073c83a03612dVendor (CNA)
azl3 kernel 6.6.96.2-2 on Azure Linux 3.06.6.104.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:bpftool4.18.0-553.100.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel4.18.0-553.100.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-core4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-core4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-devel4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-modules4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-modules-extra4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-devel4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-modules4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-modules-extra4.18.0-553.100.1.rt7.441.el8_10 · AlmaLinux:8Package registry (OSV)
debian:linux6.1.153-1 · Debian:12Package registry (OSV)
red hat:kernel-rt0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-core0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-core0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-debuginfo0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-devel0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-kvm0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-extra0:4.18.0-553.100.1.rt7.441.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)

+6

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

  • 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
none
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
None
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: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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (10 more)

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

All records