usb: gadget: aspeed_udc: check endpoint DMA allocation
Summary
| CVE | CVE-2026-93118 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-17 17:18:06 UTC |
| Updated | 2026-10-19 10:17:01 UTC |
| 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. |
Risk And Classification
EPSS: 0.001730000 probability, percentile 0.070080000 (date 2026-09-18)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 055276c1320564b0192b3af323b8cc67f9b665e1 d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df git | Not specified |
| CNA | Linux | Linux | affected 055276c1320564b0192b3af323b8cc67f9b665e1 4aaad88f857498ed1294f061f0b25d27ae891c55 git | Not specified |
| CNA | Linux | Linux | affected 055276c1320564b0192b3af323b8cc67f9b665e1 6182e708e2e1f55521c8a01d7535630ecc2d7df9 git | Not specified |
| CNA | Linux | Linux | affected 055276c1320564b0192b3af323b8cc67f9b665e1 ff6e88e29965bd06f640e59acdcf0bbf04a7f55c git | Not specified |
| CNA | Linux | Linux | affected 055276c1320564b0192b3af323b8cc67f9b665e1 9e6f57107c1886052d4baaa047a2bc3d0e91be5d git | Not specified |
| CNA | Linux | Linux | affected 055276c1320564b0192b3af323b8cc67f9b665e1 97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1 git | Not specified |
| CNA | Linux | Linux | affected 6.0 | Not specified |
| CNA | Linux | Linux | unaffected 6.0 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.188 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.157 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.110 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.52 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.6 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/ff6e88e29965bd06f640e59acdcf0bbf04a7f55c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4aaad88f857498ed1294f061f0b25d27ae891c55 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6182e708e2e1f55521c8a01d7535630ecc2d7df9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9e6f57107c1886052d4baaa047a2bc3d0e91be5d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.