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NVD / CVE Program· CNA Linux

CVE-2026-97483: usb: core: hcd: fix possible deadlock in rh control transfers

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 549672a3fb6b36ea408238f89ecf9f41d2da6225, 8461eda5af77c44d216cec66455bd5b01ee35c9a, 8f82fc3d72e5feb7a1efae94b51b431c5bf41c86; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.

Low priority for now. Upgrade to Linux Linux 549672a3fb6b36ea408238f89ecf9f41d2da6225, 8461eda5af77c44d216cec66455bd5b01ee35c9a, 8f82fc3d72e5feb7a1efae94b51b431c5bf41c86; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: core: hcd: fix possible deadlock in rh control transfers >From within the SCSI error handler memory allocations must not trigger IO. Handling errors in UAS and the storage driver may involve resetting a device. The thread doing the reset itself relies on VM magic. However, that is insufficient, as resetting a device involves resuming it. Resumption as well as resetting involves conrol transfers to the parent of the device to be reset. That may be a root hub. Hence usbcore must heed the flags passed to usb_submit_urb() processing control transfers to root hubs. The problem exist since the storage driver has been merged.

—No exploit Fix available
Published
Sep 24, 2026
Updated
Oct 3, 2026
EPSS
0.1% · 6th 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

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  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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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

    • 3.12affected
    • e57e780b346a7277fdd3bde765d9d8728b99bfa1 and later · before 8461eda5af77c44d216cec66455bd5b01ee35c9aaffected · git
    • e57e780b346a7277fdd3bde765d9d8728b99bfa1 and later · before 8f82fc3d72e5feb7a1efae94b51b431c5bf41c86affected · git
    • e57e780b346a7277fdd3bde765d9d8728b99bfa1 and later · before 936b08d87c667031725bcc753007e7c1182548c6affected · git
    • e57e780b346a7277fdd3bde765d9d8728b99bfa1 and later · before d0291fb4d91982d9f6a680bf759ff0555d351ecbaffected · git
    • e57e780b346a7277fdd3bde765d9d8728b99bfa1 and later · before fff917c85d37a294397c5440a795591ca9d6b602affected · git
    • e57e780b346a7277fdd3bde765d9d8728b99bfa1 and later · before 549672a3fb6b36ea408238f89ecf9f41d2da6225affected · git
    • e57e780b346a7277fdd3bde765d9d8728b99bfa1 and later · before d5559f43d76b398392b26a15cbc16d731969cd1caffected · git
    • before 3.12not affected · semver
    • 5.10.271 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

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-2026-97481Sep 24, 2026 · serial: 8250: fix possible ISR soft lockup
    0Monitor
  • ← EarlierCVE-2026-97482Sep 24, 2026 · usb: gadget: goku_udc: avoid NULL deref of dev->driver in INT_USBRESET log
    0Monitor
  • Later →CVE-2026-97484Sep 24, 2026 · usbip: vhci_hcd: fix NULL deref in status_show_vhci
    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 Linux549672a3fb6b36ea408238f89ecf9f41d2da6225Vendor (CNA)
Linux Linux8461eda5af77c44d216cec66455bd5b01ee35c9aVendor (CNA)
Linux Linux8f82fc3d72e5feb7a1efae94b51b431c5bf41c86Vendor (CNA)
Linux Linux936b08d87c667031725bcc753007e7c1182548c6Vendor (CNA)
Linux Linuxd0291fb4d91982d9f6a680bf759ff0555d351ecbVendor (CNA)
Linux Linuxd5559f43d76b398392b26a15cbc16d731969cd1cVendor (CNA)
Linux Linuxfff917c85d37a294397c5440a795591ca9d6b602Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~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.

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

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. Fix✗ → ✓

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References

Show all references (6 more)

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

All records