usb: gadget: aspeed_udc: check endpoint DMA allocation (CVE-2026-93118) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93118

usb: gadget: aspeed_udc: check endpoint DMA allocation

Answer in brief

CVE-2026-93118 records a Unknown severity vulnerability in usb: gadget: aspeed_udc: check endpoint DMA allocation. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=055276c1320564b0192b3af323b8cc67f9b665e1 <d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df \|\| >=055276c1320564b0192b3af323b8cc67f9b665e1 <4aaad88f857498ed1294f061f0b25d27ae891c55 \|\| >=055276c1320564b0192b3af323b8cc67f9b665e1 <6182e708e2e1f55521c8a01d7535630ecc2d7df9 \|\| >=055276c1320564b0192b3af323b8cc67f9b665e1 <ff6e88e29965bd06f640e59acdcf0bbf04a7f55c \|\| >=055276c1320564b0192b3af323b8cc67f9b665e1 <9e6f57107c1886052d4baaa047a2bc3d0e91be5d \|\| >=055276c1320564b0192b3af323b8cc67f9b665e1 <97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1	d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df, 4aaad88f857498ed1294f061f0b25d27ae891c55, 6182e708e2e1f55521c8a01d7535630ecc2d7df9, ff6e88e29965bd06f640e59acdcf0bbf04a7f55c, 9e6f57107c1886052d4baaa047a2bc3d0e91be5d, 97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1
Linux/Linuxgeneric	6.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.