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 |
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| Published | 2026-09-17 17:18:06 UTC |
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| Updated | 2026-09-17 17:18:06 UTC |
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| 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. |
|---|
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-rc1 * 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.