{"id":"CVE-2026-45923","title":"net: usb: catc: enable basic endpoint checking","summary":"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_sndbulk…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ac7739b78ded519e1d9919a814da3b34120bec8c","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 163d04897e57633c5d2e69734e4e4b22bb63f50d","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a488001a8197da4f9c413eec8f6acbff71c60145","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 36c28b028efba0f42218d41fed12c47ce217c1f1","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1a42cfced8900d33d032c7ec338484855b61b8cc","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e7021d2aeae57c323a6f722ed7915686cdcc123","Linux 2.6.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:02:08.222811Z"},"published":"2026-05-27","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:03:15.299Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45923","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"}],"tags":["cve.org"],"epss":0.0016,"epssPercentile":0.05258,"ingestedAt":"2026-11-06T16:57:43.376Z","slug":"CVE-2026-45923","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ac7739b78ded519e1d9919a814da3b34120bec8c`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 163d04897e57633c5d2e69734e4e4b22bb63f50d`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a488001a8197da4f9c413eec8f6acbff71c60145`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 36c28b028efba0f42218d41fed12c47ce217c1f1`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1a42cfced8900d33d032c7ec338484855b61b8cc`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e7021d2aeae57c323a6f722ed7915686cdcc123`\n- `Linux 2.6.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}