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NVD / CVE Program· CNA Linux

CVE-2026-43342: usb: gadget: f_rndis: Protect RNDIS options with mutex

Noroxi assessment

Priority: Monitor (action score 18/100)

  • 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: 0.08% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 0a75d97c53477a59c0aa1c65f69038c719f9c5b8, 209decd3f7901df9842b83f2540dc8685e344a07, 446f1842cda929c40d4697722bfdcfb334bc9692.

Low priority for now. Upgrade to Linux Linux 0a75d97c53477a59c0aa1c65f69038c719f9c5b8, 209decd3f7901df9842b83f2540dc8685e344a07, 446f1842cda929c40d4697722bfdcfb334bc9692 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: gadget: f_rndis: Protect RNDIS options with mutex The class/subclass/protocol options are suspectible to race conditions as they can be accessed concurrently through configfs. Use existing mutex to protect these options. This issue was identified during code inspection.

MediumCVSS 4.7 · v3.1—No exploit Fix available
Published
May 8, 2026
Updated
Jun 17, 2026
EPSS
0.0% · 0th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.0%

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-2026-43342

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 kernel4.14 and later · before 5.10.253
  • linux linux kernel5.11 and later · before 5.15.203
  • linux linux kernel5.16 and later · before 6.1.168
  • linux linux kernel6.2 and later · before 6.6.134
  • linux linux kernel6.7 and later · before 6.12.81
  • linux linux kernel6.13 and later · before 6.18.22
  • linux linux kernel6.19 and later · before 6.19.12
  • 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

    • 4.14affected
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before 0a75d97c53477a59c0aa1c65f69038c719f9c5b8affected · git
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before c1b3d5b0acb194efe20fc5864ee03439fa7bd45caffected · git
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before 65b7dbf80a1627667c241fff7c1c224f3118014faffected · git
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before cb5316b37288ab8791584e32f114c4f41ad45b67affected · git
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before 7d8fa3b8783ab95a46e20d97fbeeede719b2efdaaffected · git
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before 446f1842cda929c40d4697722bfdcfb334bc9692affected · git
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before 209decd3f7901df9842b83f2540dc8685e344a07affected · git
    • 73517cf49bd449122b615d2b7a6bb835f02252e5 and later · before 8d8c68b1fc06ece60cf43e1306ff0f4ac121547eaffected · 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 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.19.12-16.19.12-1

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-2026-43336May 8, 2026 · lib/crypto: chacha: Zeroize permuted_state before it leaves scope
    30Monitor
  • ← EarlierCVE-2026-43340May 8, 2026 · comedi: Reinit dev->spinlock between attachments to low-level drivers
    22Monitor
  • Later →CVE-2026-43343May 8, 2026 · usb: gadget: f_subset: Fix unbalanced refcnt in geth_free
    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 Linux0a75d97c53477a59c0aa1c65f69038c719f9c5b8Vendor (CNA)
Linux Linux209decd3f7901df9842b83f2540dc8685e344a07Vendor (CNA)
Linux Linux446f1842cda929c40d4697722bfdcfb334bc9692Vendor (CNA)
Linux Linux65b7dbf80a1627667c241fff7c1c224f3118014fVendor (CNA)
Linux Linux7d8fa3b8783ab95a46e20d97fbeeede719b2efdaVendor (CNA)
Linux Linux8d8c68b1fc06ece60cf43e1306ff0f4ac121547eVendor (CNA)
Linux Linuxc1b3d5b0acb194efe20fc5864ee03439fa7bd45cVendor (CNA)
Linux Linuxcb5316b37288ab8791584e32f114c4f41ad45b67Vendor (CNA)
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.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:H/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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records