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.
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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| 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 |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.