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NVD / CVE Program· CNA Linux

CVE-2026-93141: usb: gadget: r8a66597: avoid double free of ep0_req in probe error path

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: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 150d3f3c461345b6c9ae784912cf1e49c8e5ff6b, 41d541e3718db01668a4cd29815ee4b3b55f76d2, 6648c470918371766f6d368113dd2a4faebac93f; 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 150d3f3c461345b6c9ae784912cf1e49c8e5ff6b, 41d541e3718db01668a4cd29815ee4b3b55f76d2, 6648c470918371766f6d368113dd2a4faebac93f; 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: gadget: r8a66597: avoid double free of ep0_req in probe error path If usb_add_gadget_udc() fails, r8a66597_probe() jumps to err_add_udc and frees ep0_req, then falls through to clean_up2 where ep0_req is freed again when it is non-NULL. Remove the redundant free from err_add_udc and keep the cleanup in clean_up2 so the request is released exactly once. Issue found using a prototype static analysis tool and confirmed by code review.

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th 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%

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

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
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  • 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

    • 3.17affected
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before c9e93290ffe7db22a8131a5f5fd026335090fbbeaffected · git
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before 7721cf32efa428bd9649f4a9b89fc85601df87deaffected · git
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before f9c43246128a2dd0f2bbad71decf153910ce3606affected · git
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before 150d3f3c461345b6c9ae784912cf1e49c8e5ff6baffected · git
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before b2e68583c7c51eea2aafb8f1793e0d285c56ac82affected · git
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before 6648c470918371766f6d368113dd2a4faebac93faffected · git
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before 6be64cca6527f7fc99b05abf54f22db91bbc116faffected · git
    • 776976a67ae25d18be42794fd783a50757402cbe and later · before 41d541e3718db01668a4cd29815ee4b3b55f76d2affected · git
    • before 3.17not 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-2026-93139Sep 17, 2026 · drm/amdgpu/mes: Fix hung_queue_db_array loop limit for multi-XCC
    0Monitor
  • ← EarlierCVE-2026-93140Sep 17, 2026 · udf: Mark LVID buffer as uptodate before marking it dirty
    0Monitor
  • Later →CVE-2026-93142Sep 17, 2026 · thermal/drivers/rcar: Fix error checking in probe()
    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 Linux150d3f3c461345b6c9ae784912cf1e49c8e5ff6bVendor (CNA)
Linux Linux41d541e3718db01668a4cd29815ee4b3b55f76d2Vendor (CNA)
Linux Linux6648c470918371766f6d368113dd2a4faebac93fVendor (CNA)
Linux Linux6be64cca6527f7fc99b05abf54f22db91bbc116fVendor (CNA)
Linux Linux7721cf32efa428bd9649f4a9b89fc85601df87deVendor (CNA)
Linux Linuxb2e68583c7c51eea2aafb8f1793e0d285c56ac82Vendor (CNA)
Linux Linuxc9e93290ffe7db22a8131a5f5fd026335090fbbeVendor (CNA)
Linux Linuxf9c43246128a2dd0f2bbad71decf153910ce3606Vendor (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 (7 more)

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

All records