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NVD / CVE Program· CNA Linux

CVE-2026-23290: net: usb: pegasus: validate USB endpoints

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: 0.13% (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 11de1d3ae5565ed22ef1f89d73d8f2d00322c699, 43d7c4114b1ec14f41f09306525d3b9382286fc1, 7f8505c7ce3f186ef9d2495f3c0bd6ad6fce999f; azl3 kernel 6.6.126.1-1 on Azure Linux 3.0 6.6.130.1-1.

Low priority for now. Upgrade to Linux Linux 11de1d3ae5565ed22ef1f89d73d8f2d00322c699, 43d7c4114b1ec14f41f09306525d3b9382286fc1, 7f8505c7ce3f186ef9d2495f3c0bd6ad6fce999f; azl3 kernel 6.6.126.1-1 on Azure Linux 3.0 6.6.130.1-1 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: net: usb: pegasus: validate USB endpoints The pegasus driver should validate that the device it is probing has the proper number and types of USB endpoints it is expecting before it binds to it. If a malicious device were to not have the same urbs the driver will crash later on when it blindly accesses these endpoints.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 25, 2026
Updated
Nov 5, 2026
EPSS
0.1% · 2th 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 · 0.1%

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-2026-23290

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 kernel2.6.12.1 and later · before 5.10.253
  • linux linux kernel5.11 and later · before 5.15.203
  • linux linux kernel5.16 and later · before 6.1.167
  • linux linux kernel6.2 and later · before 6.6.130
  • linux linux kernel6.7 and later · before 6.12.77
  • linux linux kernel6.13 and later · before 6.18.17
  • linux linux kernel6.19 and later · before 6.19.7
  • linux linux kernel2.6.12
  • linux linux kernel7.0

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

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before d5d9086211877361f1bda44a0aec538ddb04042aaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before af7369ae572f53cb701731a4289ec3b3889bc501affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 43d7c4114b1ec14f41f09306525d3b9382286fc1affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 7f8505c7ce3f186ef9d2495f3c0bd6ad6fce999faffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 95556b4e879711693c9865ba0938c148f62d5ea4affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before c3f1672eaea68c5cb6e1ec081cdb92045453218faffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before ee31ec8cf1eafeefa85ef934ba688d27f88bf0e2affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 11de1d3ae5565ed22ef1f89d73d8f2d00322c699affected · git
    • before 2.6.12not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.8-16.19.8-1

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-2026-23287Mar 25, 2026 · irqchip/sifive-plic: Fix frozen interrupt due to affinity setting
    22Monitor
  • ← EarlierCVE-2026-23289Mar 25, 2026 · IB/mthca: Add missed mthca_unmap_user_db() for mthca_create_srq()
    22Monitor
  • Later →CVE-2026-23291Mar 25, 2026 · nfc: pn533: properly drop the usb interface reference on disconnect
    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 Linux11de1d3ae5565ed22ef1f89d73d8f2d00322c699Vendor (CNA)
Linux Linux43d7c4114b1ec14f41f09306525d3b9382286fc1Vendor (CNA)
Linux Linux7f8505c7ce3f186ef9d2495f3c0bd6ad6fce999fVendor (CNA)
Linux Linux95556b4e879711693c9865ba0938c148f62d5ea4Vendor (CNA)
Linux Linuxaf7369ae572f53cb701731a4289ec3b3889bc501Vendor (CNA)
Linux Linuxc3f1672eaea68c5cb6e1ec081cdb92045453218fVendor (CNA)
Linux Linuxd5d9086211877361f1bda44a0aec538ddb04042aVendor (CNA)
Linux Linuxee31ec8cf1eafeefa85ef934ba688d27f88bf0e2Vendor (CNA)
azl3 kernel 6.6.126.1-1 on Azure Linux 3.06.6.130.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.170-1 · 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 (11 more)

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

All records