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NVD / CVE Program· CNA Linux

CVE-2026-93117: usb: fix UAF when probe runs concurrent to dyn ID removal

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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 44904468e58d3dc3a0229782acbeb9677b060541, 64320c6e721bdec4c43a789c866c8a099dd0c843, 7e795801295c84a6bbc10a3e7a4c99c50bfe45ac; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.

Low priority for now. Upgrade to Linux Linux 44904468e58d3dc3a0229782acbeb9677b060541, 64320c6e721bdec4c43a789c866c8a099dd0c843, 7e795801295c84a6bbc10a3e7a4c99c50bfe45ac; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 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: fix UAF when probe runs concurrent to dyn ID removal Dynamic IDs are only guaranteed to be valid when usb_dynids_lock is held, as remove_id_store can free the node. Thus, make a copy in usb_probe_interface. Clarify the documentation that the id parameter is only valid during the probe. USB serial has the same pattern, but it does not need fixing as the IDs cannot be removed via sysfs.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 10th 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 · 0.2%

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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

    • 2.6.33affected
    • 0c7a2b72746a96f999fd2728520d03d94879be69 and later · before 9b82ddf76827e2a8ff033a8131ecf24f2d6cae26affected · git
    • 0c7a2b72746a96f999fd2728520d03d94879be69 and later · before 44904468e58d3dc3a0229782acbeb9677b060541affected · git
    • 0c7a2b72746a96f999fd2728520d03d94879be69 and later · before 64320c6e721bdec4c43a789c866c8a099dd0c843affected · git
    • 0c7a2b72746a96f999fd2728520d03d94879be69 and later · before 7e795801295c84a6bbc10a3e7a4c99c50bfe45acaffected · git
    • 0c7a2b72746a96f999fd2728520d03d94879be69 and later · before e6a9c6b79b70046afdf5a1dbd03b1104536f30c0affected · git
    • 0c7a2b72746a96f999fd2728520d03d94879be69 and later · before ef8154d8b52d60338c1fd8d793cd8e891c604c14affected · git
    • before 2.6.33not affected · semver
    • 6.1.188 and later · up to and including 6.1.*not affected · semver
    • 6.6.157 and later · up to and including 6.6.*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-2026-93115Sep 17, 2026 · platform/mellanox: mlxbf-pmc: Check ACPI_COMPANION() against NULL
    0Monitor
  • ← EarlierCVE-2026-93116Sep 17, 2026 · platform/x86: asus-wmi: fix resource leaks on probe failure
    28Monitor
  • Later →CVE-2026-93118Sep 17, 2026 · usb: gadget: aspeed_udc: check endpoint DMA allocation
    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 Linux44904468e58d3dc3a0229782acbeb9677b060541Vendor (CNA)
Linux Linux64320c6e721bdec4c43a789c866c8a099dd0c843Vendor (CNA)
Linux Linux7e795801295c84a6bbc10a3e7a4c99c50bfe45acVendor (CNA)
Linux Linux9b82ddf76827e2a8ff033a8131ecf24f2d6cae26Vendor (CNA)
Linux Linuxe6a9c6b79b70046afdf5a1dbd03b1104536f30c0Vendor (CNA)
Linux Linuxef8154d8b52d60338c1fd8d793cd8e891c604c14Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · 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 (5 more)

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

All records