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NVD / CVE Program· CNA Linux

CVE-2026-93118: usb: gadget: aspeed_udc: check endpoint DMA allocation

—No exploit Fix available

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 4aaad88f857498ed1294f061f0b25d27ae891c55, 6182e708e2e1f55521c8a01d7535630ecc2d7df9, 97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1; 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 4aaad88f857498ed1294f061f0b25d27ae891c55, 6182e708e2e1f55521c8a01d7535630ecc2d7df9, 97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1; 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: aspeed_udc: check endpoint DMA allocation ast_udc_probe() allocates a coherent DMA buffer used as the backing store for endpoint buffers. ast_udc_init_ep() derives per-endpoint buffer pointers from udc->ep0_buf, so a failed allocation is dereferenced during probe. Check the allocation before endpoint setup. The existing probe error path called ast_udc_remove(), which unregisters the gadget unconditionally and is not safe before usb_add_gadget_udc() succeeds. Add a local cleanup helper for probe failures so pre-registration failures only unwind the resources that were actually initialized. This was found by a local static analysis checker for unchecked allocator returns while scanning Linux 6.16. The change was checked by applying it to current mainline and by running checkpatch. I do not have access to Aspeed UDC hardware, so no runtime testing was performed.

Published
Sep 17, 2026
Updated
Oct 19, 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

  • 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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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

    • 6.0affected
    • 055276c1320564b0192b3af323b8cc67f9b665e1 and later · before d7ae1a48e70e9c3451b7dc7bc3896c82884bc4dfaffected · git
    • 055276c1320564b0192b3af323b8cc67f9b665e1 and later · before 4aaad88f857498ed1294f061f0b25d27ae891c55affected · git
    • 055276c1320564b0192b3af323b8cc67f9b665e1 and later · before 6182e708e2e1f55521c8a01d7535630ecc2d7df9affected · git
    • 055276c1320564b0192b3af323b8cc67f9b665e1 and later · before ff6e88e29965bd06f640e59acdcf0bbf04a7f55caffected · git
    • 055276c1320564b0192b3af323b8cc67f9b665e1 and later · before 9e6f57107c1886052d4baaa047a2bc3d0e91be5daffected · git
    • 055276c1320564b0192b3af323b8cc67f9b665e1 and later · before 97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1affected · git
    • before 6.0not 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-2026-93116Sep 17, 2026 · platform/x86: asus-wmi: fix resource leaks on probe failure
    28Monitor
  • ← EarlierCVE-2026-93117Sep 17, 2026 · usb: fix UAF when probe runs concurrent to dyn ID removal
    0Monitor
  • Later →CVE-2026-93119Sep 17, 2026 · usb: ljca: bound bank_num in ljca_enumerate_gpio()
    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 Linux4aaad88f857498ed1294f061f0b25d27ae891c55Vendor (CNA)
Linux Linux6182e708e2e1f55521c8a01d7535630ecc2d7df9Vendor (CNA)
Linux Linux97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1Vendor (CNA)
Linux Linux9e6f57107c1886052d4baaa047a2bc3d0e91be5dVendor (CNA)
Linux Linuxd7ae1a48e70e9c3451b7dc7bc3896c82884bc4dfVendor (CNA)
Linux Linuxff6e88e29965bd06f640e59acdcf0bbf04a7f55cVendor (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).

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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.

References

Show all references (5 more)

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

All records