{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45923", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.085Z", "datePublished": "2026-05-27T12:17:42.312Z", "dateUpdated": "2026-05-27T12:17:42.312Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T12:17:42.312Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/usb/catc.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ac7739b78ded519e1d9919a814da3b34120bec8c", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "163d04897e57633c5d2e69734e4e4b22bb63f50d", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a488001a8197da4f9c413eec8f6acbff71c60145", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "36c28b028efba0f42218d41fed12c47ce217c1f1", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1a42cfced8900d33d032c7ec338484855b61b8cc", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9e7021d2aeae57c323a6f722ed7915686cdcc123", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/usb/catc.c"], "versions": [{"version": "2.6.12", "status": "affected"}, {"version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.252", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.165", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.128", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.14", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.4", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}]}]}], "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"}], "title": "net: usb: catc: enable basic endpoint checking", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-45923", "lastModified": "2026-05-27T14:48:03.013", "metrics": {}, "published": "2026-05-27T14:17:07.283", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/163d04897e57633c5d2e69734e4e4b22bb63f50d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a42cfced8900d33d032c7ec338484855b61b8cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36c28b028efba0f42218d41fed12c47ce217c1f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9e7021d2aeae57c323a6f722ed7915686cdcc123"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a488001a8197da4f9c413eec8f6acbff71c60145"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ac7739b78ded519e1d9919a814da3b34120bec8c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{"created": "2026-05-27T16:30:36.647138+00:00", "title": "USB CatC Driver Vulnerability: Incorrect Endpoint Descriptor Validation", "updated": "2026-05-27T16:30:36.647148+00:00", "vendors": [], "weaknesses": ["CWE-20"]}