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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98696: USB: serial: fix driver deregistration order

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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).
  • Fixed version: Linux Linux 2f12343f39e316ff66adc84a6db3569f33b50f66, 428d479a0d31460fbf5969ab262ccd673f1fac01, 646e5b28b4fdbc1b828a2398d6ced2c1dd308a46; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1.

Low priority for now. Upgrade to Linux Linux 2f12343f39e316ff66adc84a6db3569f33b50f66, 428d479a0d31460fbf5969ab262ccd673f1fac01, 646e5b28b4fdbc1b828a2398d6ced2c1dd308a46; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.159.1-1 on Azure Linux 3.0 6.6.161.1-1 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: USB: serial: fix driver deregistration order USB serial driver modules register one driver for the USB bus and one or more drivers for the ports on the USB serial bus. When unloading a driver module, the USB driver must be deregistered before the USB serial bus drivers so that I/O is stopped before unbinding the ports to avoid use-after-free in completion handlers accessing port data. Note that the "new_id" attributes must first be removed to prevent new ids from being added and triggering a probe of the USB driver after it has been deregistered.

—No exploit Fix available
Published
Oct 18, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 7th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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-2026-98696

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.

—

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

    • 3.4affected
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before 991904982827f07706c643bb0428c4b689b254e3affected · git
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before 7c65438e3b98bd6009af09db8c725547192cdfe0affected · git
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before 2f12343f39e316ff66adc84a6db3569f33b50f66affected · git
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before e7ad832b1144df19cbbaaa655625c6f984e85b9faffected · git
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before 9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffeaffected · git
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before a1aa474768f69ea3a70da523f00f74c264cfa10eaffected · git
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before 428d479a0d31460fbf5969ab262ccd673f1fac01affected · git
    • 765e0ba62613fb90f09c1b5926750df0aa56f349 and later · before 646e5b28b4fdbc1b828a2398d6ced2c1dd308a46affected · git
    • before 3.4not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.10-17.2.10-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98694Oct 18, 2026 · thunderbolt: Fix KASAN reported use-after-free when request is canceled
    0Monitor
  • ← EarlierCVE-2026-98695Oct 18, 2026 · USB: serial: fix ioctl hangup race
    0Monitor
  • Later →CVE-2026-98697Oct 18, 2026 · USB: serial: fix dynamic id driver deregistration race
    0Monitor

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 Linux2f12343f39e316ff66adc84a6db3569f33b50f66Vendor (CNA)
Linux Linux428d479a0d31460fbf5969ab262ccd673f1fac01Vendor (CNA)
Linux Linux646e5b28b4fdbc1b828a2398d6ced2c1dd308a46Vendor (CNA)
Linux Linux7c65438e3b98bd6009af09db8c725547192cdfe0Vendor (CNA)
Linux Linux991904982827f07706c643bb0428c4b689b254e3Vendor (CNA)
Linux Linux9b085a06a0a411b0bcdf18b61c3ebf1be1c72ffeVendor (CNA)
Linux Linuxa1aa474768f69ea3a70da523f00f74c264cfa10eVendor (CNA)
Linux Linuxe7ad832b1144df19cbbaaa655625c6f984e85b9fVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.159.1-1 on Azure Linux 3.06.6.161.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · 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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 7, 2026+20 d
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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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. Exploit maturity— → none
  2. 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