{"api_version":"1","generated_at":"2026-09-17T23:31:47+00:00","cve":"CVE-2026-93118","urls":{"html":"https://cve.report/CVE-2026-93118","api":"https://cve.report/api/cve/CVE-2026-93118.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93118","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93118"},"summary":{"title":"usb: gadget: aspeed_udc: check endpoint DMA allocation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed_udc: check endpoint DMA allocation\n\nast_udc_probe() allocates a coherent DMA buffer used as the backing store\nfor endpoint buffers. ast_udc_init_ep() derives per-endpoint buffer\npointers from udc->ep0_buf, so a failed allocation is dereferenced during\nprobe.\n\nCheck the allocation before endpoint setup. The existing probe error path\ncalled ast_udc_remove(), which unregisters the gadget unconditionally and\nis not safe before usb_add_gadget_udc() succeeds. Add a local cleanup\nhelper for probe failures so pre-registration failures only unwind the\nresources that were actually initialized.\n\nThis was found by a local static analysis checker for unchecked allocator\nreturns while scanning Linux 6.16. The change was checked by applying it\nto current mainline and by running checkpatch. I do not have access to\nAspeed UDC hardware, so no runtime testing was performed.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:06","updated_at":"2026-09-17 17:18:06"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ff6e88e29965bd06f640e59acdcf0bbf04a7f55c","name":"https://git.kernel.org/stable/c/ff6e88e29965bd06f640e59acdcf0bbf04a7f55c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df","name":"https://git.kernel.org/stable/c/d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4aaad88f857498ed1294f061f0b25d27ae891c55","name":"https://git.kernel.org/stable/c/4aaad88f857498ed1294f061f0b25d27ae891c55","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6182e708e2e1f55521c8a01d7535630ecc2d7df9","name":"https://git.kernel.org/stable/c/6182e708e2e1f55521c8a01d7535630ecc2d7df9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1","name":"https://git.kernel.org/stable/c/97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9e6f57107c1886052d4baaa047a2bc3d0e91be5d","name":"https://git.kernel.org/stable/c/9e6f57107c1886052d4baaa047a2bc3d0e91be5d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93118","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93118","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 055276c1320564b0192b3af323b8cc67f9b665e1 d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 055276c1320564b0192b3af323b8cc67f9b665e1 4aaad88f857498ed1294f061f0b25d27ae891c55 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 055276c1320564b0192b3af323b8cc67f9b665e1 6182e708e2e1f55521c8a01d7535630ecc2d7df9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 055276c1320564b0192b3af323b8cc67f9b665e1 ff6e88e29965bd06f640e59acdcf0bbf04a7f55c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 055276c1320564b0192b3af323b8cc67f9b665e1 9e6f57107c1886052d4baaa047a2bc3d0e91be5d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 055276c1320564b0192b3af323b8cc67f9b665e1 97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/gadget/udc/aspeed_udc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df","status":"affected","version":"055276c1320564b0192b3af323b8cc67f9b665e1","versionType":"git"},{"lessThan":"4aaad88f857498ed1294f061f0b25d27ae891c55","status":"affected","version":"055276c1320564b0192b3af323b8cc67f9b665e1","versionType":"git"},{"lessThan":"6182e708e2e1f55521c8a01d7535630ecc2d7df9","status":"affected","version":"055276c1320564b0192b3af323b8cc67f9b665e1","versionType":"git"},{"lessThan":"ff6e88e29965bd06f640e59acdcf0bbf04a7f55c","status":"affected","version":"055276c1320564b0192b3af323b8cc67f9b665e1","versionType":"git"},{"lessThan":"9e6f57107c1886052d4baaa047a2bc3d0e91be5d","status":"affected","version":"055276c1320564b0192b3af323b8cc67f9b665e1","versionType":"git"},{"lessThan":"97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1","status":"affected","version":"055276c1320564b0192b3af323b8cc67f9b665e1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/gadget/udc/aspeed_udc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed_udc: check endpoint DMA allocation\n\nast_udc_probe() allocates a coherent DMA buffer used as the backing store\nfor endpoint buffers. ast_udc_init_ep() derives per-endpoint buffer\npointers from udc->ep0_buf, so a failed allocation is dereferenced during\nprobe.\n\nCheck the allocation before endpoint setup. The existing probe error path\ncalled ast_udc_remove(), which unregisters the gadget unconditionally and\nis not safe before usb_add_gadget_udc() succeeds. Add a local cleanup\nhelper for probe failures so pre-registration failures only unwind the\nresources that were actually initialized.\n\nThis was found by a local static analysis checker for unchecked allocator\nreturns while scanning Linux 6.16. The change was checked by applying it\nto current mainline and by running checkpatch. I do not have access to\nAspeed UDC hardware, so no runtime testing was performed."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:25.186Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df"},{"url":"https://git.kernel.org/stable/c/4aaad88f857498ed1294f061f0b25d27ae891c55"},{"url":"https://git.kernel.org/stable/c/6182e708e2e1f55521c8a01d7535630ecc2d7df9"},{"url":"https://git.kernel.org/stable/c/ff6e88e29965bd06f640e59acdcf0bbf04a7f55c"},{"url":"https://git.kernel.org/stable/c/9e6f57107c1886052d4baaa047a2bc3d0e91be5d"},{"url":"https://git.kernel.org/stable/c/97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1"}],"title":"usb: gadget: aspeed_udc: check endpoint DMA allocation","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93118","datePublished":"2026-09-17T16:11:25.186Z","dateReserved":"2026-09-17T16:02:15.086Z","dateUpdated":"2026-09-17T16:11:25.186Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:06","lastModifiedDate":"2026-09-17 17:18:06","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93118","Ordinal":"1","Title":"usb: gadget: aspeed_udc: check endpoint DMA allocation","CVE":"CVE-2026-93118","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93118","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed_udc: check endpoint DMA allocation\n\nast_udc_probe() allocates a coherent DMA buffer used as the backing store\nfor endpoint buffers. ast_udc_init_ep() derives per-endpoint buffer\npointers from udc->ep0_buf, so a failed allocation is dereferenced during\nprobe.\n\nCheck the allocation before endpoint setup. The existing probe error path\ncalled ast_udc_remove(), which unregisters the gadget unconditionally and\nis not safe before usb_add_gadget_udc() succeeds. Add a local cleanup\nhelper for probe failures so pre-registration failures only unwind the\nresources that were actually initialized.\n\nThis was found by a local static analysis checker for unchecked allocator\nreturns while scanning Linux 6.16. The change was checked by applying it\nto current mainline and by running checkpatch. I do not have access to\nAspeed UDC hardware, so no runtime testing was performed.","Type":"Description","Title":"usb: gadget: aspeed_udc: check endpoint DMA allocation"}]}}}