{"id":"CVE-2026-45923","state":"PUBLISHED","title":"net: usb: catc: enable basic endpoint checking","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: catc: enable basic endpoint checking\n\ncatc_probe() fills three URBs with hardcoded endpoint pipes without\nverifying the endpoint descriptors:\n\n  - usb_sndbulkpipe(usbdev, 1) and usb_rcvbulkpipe(usbdev, 1) for TX/RX\n  - usb_rcvintpipe(usbdev, 2) for interrupt status\n\nA malformed USB device can present these endpoints with transfer types\nthat differ from what the driver assumes.\n\nAdd a catc_usb_ep enum for endpoint numbers, replacing magic constants\nthroughout. Add usb_check_bulk_endpoints() and usb_check_int_endpoints()\ncalls after usb_set_interface() to verify endpoint types before use,\nrejecting devices with mismatched descriptors at probe time.\n\nSimilar to\n- commit 90b7f2961798 (\"net: usb: rtl8150: enable basic endpoint checking\")\nwhich fixed the issue in rtl8150.","publishedAt":"2026-05-27T12:17:42.312Z","updatedAt":"2026-05-27T12:17:42.312Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ac7739b78ded519e1d9919a814da3b34120bec8c","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"163d04897e57633c5d2e69734e4e4b22bb63f50d","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"a488001a8197da4f9c413eec8f6acbff71c60145","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"36c28b028efba0f42218d41fed12c47ce217c1f1","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"1a42cfced8900d33d032c7ec338484855b61b8cc","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"9e7021d2aeae57c323a6f722ed7915686cdcc123","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/catc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/catc.c"]}],"references":["https://git.kernel.org/stable/c/eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f","https://git.kernel.org/stable/c/ac7739b78ded519e1d9919a814da3b34120bec8c","https://git.kernel.org/stable/c/163d04897e57633c5d2e69734e4e4b22bb63f50d","https://git.kernel.org/stable/c/a488001a8197da4f9c413eec8f6acbff71c60145","https://git.kernel.org/stable/c/36c28b028efba0f42218d41fed12c47ce217c1f1","https://git.kernel.org/stable/c/1a42cfced8900d33d032c7ec338484855b61b8cc","https://git.kernel.org/stable/c/9e7021d2aeae57c323a6f722ed7915686cdcc123"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45923.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45923","state":"PUBLISHED","datePublished":"2026-05-27T12:17:42.312Z","dateUpdated":"2026-05-27T12:17:42.312Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.085Z"},"containers":{"cna":{"title":"net: usb: catc: enable basic endpoint checking","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: catc: enable basic endpoint checking\n\ncatc_probe() fills three URBs with hardcoded endpoint pipes without\nverifying the endpoint descriptors:\n\n  - usb_sndbulkpipe(usbdev, 1) and usb_rcvbulkpipe(usbdev, 1) for TX/RX\n  - usb_rcvintpipe(usbdev, 2) for interrupt status\n\nA malformed USB device can present these endpoints with transfer types\nthat differ from what the driver assumes.\n\nAdd a catc_usb_ep enum for endpoint numbers, replacing magic constants\nthroughout. Add usb_check_bulk_endpoints() and usb_check_int_endpoints()\ncalls after usb_set_interface() to verify endpoint types before use,\nrejecting devices with mismatched descriptors at probe time.\n\nSimilar to\n- commit 90b7f2961798 (\"net: usb: rtl8150: enable basic endpoint checking\")\nwhich fixed the issue in rtl8150."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ac7739b78ded519e1d9919a814da3b34120bec8c","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"163d04897e57633c5d2e69734e4e4b22bb63f50d","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"a488001a8197da4f9c413eec8f6acbff71c60145","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"36c28b028efba0f42218d41fed12c47ce217c1f1","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"1a42cfced8900d33d032c7ec338484855b61b8cc","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"9e7021d2aeae57c323a6f722ed7915686cdcc123","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/catc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/catc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f"},{"url":"https://git.kernel.org/stable/c/ac7739b78ded519e1d9919a814da3b34120bec8c"},{"url":"https://git.kernel.org/stable/c/163d04897e57633c5d2e69734e4e4b22bb63f50d"},{"url":"https://git.kernel.org/stable/c/a488001a8197da4f9c413eec8f6acbff71c60145"},{"url":"https://git.kernel.org/stable/c/36c28b028efba0f42218d41fed12c47ce217c1f1"},{"url":"https://git.kernel.org/stable/c/1a42cfced8900d33d032c7ec338484855b61b8cc"},{"url":"https://git.kernel.org/stable/c/9e7021d2aeae57c323a6f722ed7915686cdcc123"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:17:42.312Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}