CVE-2026-93118usb: gadget: aspeed_udc: check endpoint DMA allocation
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 055276c1320564b0192b3af323b8cc67f9b665e1 before d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df; 055276c1320564b0192b3af323b8cc67f9b665e1 builds before 4aaad88f857498ed1294f061f0b25d27ae891c55; 055276c1320564b0192b3af323b8cc67f9b665e1 builds before 6182e708e2e1f55521c8a01d7535630ecc2d7df9; from 055276c1320564b0192b3af323b8cc67f9b665e1 before ff6e88e29965bd06f640e59acdcf0bbf04a7f55c; 055276c1320564b0192b3af323b8cc67f9b665e1 builds before 9e6f57107c1886052d4baaa047a2bc3d0e91be5d; 055276c1320564b0192b3af323b8cc67f9b665e1 builds before 97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1 | CNA record |
References
- https://git.kernel.org/stable/c/d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df
- https://git.kernel.org/stable/c/4aaad88f857498ed1294f061f0b25d27ae891c55
- https://git.kernel.org/stable/c/6182e708e2e1f55521c8a01d7535630ecc2d7df9
- https://git.kernel.org/stable/c/ff6e88e29965bd06f640e59acdcf0bbf04a7f55c
- https://git.kernel.org/stable/c/9e6f57107c1886052d4baaa047a2bc3d0e91be5d
- https://git.kernel.org/stable/c/97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.