usb: gadget: aspeed_udc: check endpoint DMA allocation
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.
CVE-2026-93118
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93118
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "055276c1320564b0192b3af323b8cc67f9b665e1",
"lessThan": "d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df",
"versionType": "git"
},
{
"status": "affected",
"version": "055276c1320564b0192b3af323b8cc67f9b665e1",
"lessThan": "4aaad88f857498ed1294f061f0b25d27ae891c55",
"versionType": "git"
},
{
"status": "affected",
"version": "055276c1320564b0192b3af323b8cc67f9b665e1",
"lessThan": "6182e708e2e1f55521c8a01d7535630ecc2d7df9",
"versionType": "git"
},
{
"status": "affected",
"version": "055276c1320564b0192b3af323b8cc67f9b665e1",
"lessThan": "ff6e88e29965bd06f640e59acdcf0bbf04a7f55c",
"versionType": "git"
},
{
"status": "affected",
"version": "055276c1320564b0192b3af323b8cc67f9b665e1",
"lessThan": "9e6f57107c1886052d4baaa047a2bc3d0e91be5d",
"versionType": "git"
},
{
"status": "affected",
"version": "055276c1320564b0192b3af323b8cc67f9b665e1",
"lessThan": "97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/gadget/udc/aspeed_udc.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/gadget/udc/aspeed_udc.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93118
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37843 · Revision 1
- Added to Heist Feed
- Publisher date