UnratedFix available
net: usb: catc: enable basic endpoint checking
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: net: usb: catc: enable basic endpoint checking catc_probe() fills three URBs with hardcoded endpoint pipes without verifying the endpoint descriptors: - usb_sndbulkpipe(usbdev, 1) and usb_rcvbulkpipe(usbdev, 1) for TX/RX - usb_rcvintpipe(usbdev, 2) for interrupt status A malformed USB device can present these endpoints with transfer types that differ from what the driver assumes. Add a catc_usb_ep enum for endpoint numbers, replacing magic constants throughout. Add usb_check_bulk_endpoints() and usb_check_int_endpoints() calls after usb_set_interface() to verify endpoint types before use, rejecting devices with mismatched descriptors at probe time. Similar to - commit 90b7f2961798 ("net: usb: rtl8150: enable basic endpoint checking") which fixed the issue in rtl8150.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.252, 6.1.165, 6.12.75, 6.18.14, 6.19.4, 6.6.128
- CVEs
- CVE-2026-45923
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 17:54 UTC · Revision 1
Source evidence
net: usb: catc: enable basic endpoint checking
core-osv · Original sourcePublished 27 May 2026, 12:17 UTC
In the Linux kernel, the following vulnerability has been resolved: net: usb: catc: enable basic endpoint checking catc_probe() fills three URBs with hardcoded endpoint pipes without verifying the endpoint descriptors: - usb_sndbulkpipe(usbdev, 1) and usb_rcvbulkpipe(usbdev, 1) for TX/RX - usb_rcvintpipe(usbdev, 2) for interrupt status A malformed USB device can present these endpoints with transfer types that differ from what the driver assumes. Add a catc_usb_ep enum for endpoint numbers, replacing magic constants throughout. Add usb_check_bulk_endpoints() and usb_check_int_endpoints() calls after usb_set_interface() to verify endpoint types before use, rejecting devices with mismatched descriptors at probe time. Similar to - commit 90b7f2961798 ("net: usb: rtl8150: enable basic endpoint checking") which fixed the issue in rtl8150.
osv:CVE-2026-45923
Kernel
Fixed versions: 5.10.252, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4
Complete source record
{
"id": "b69578d546171e0b99de2494b67bfaaa1f1534dcdcd5014874fee1997fe8bd3d",
"url": "https://osv.dev/vulnerability/CVE-2026-45923",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net: usb: catc: enable basic endpoint checking",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: usb: catc: enable basic endpoint checking catc_probe() fills three URBs with hardcoded endpoint pipes without verifying the endpoint descriptors: - usb_sndbulkpipe(usbdev, 1) and usb_rcvbulkpipe(usbdev, 1) for TX/RX - usb_rcvintpipe(usbdev, 2) for interrupt status A malformed USB device can present these endpoints with transfer types that differ from what the driver assumes. Add a catc_usb_ep enum for endpoint numbers, replacing magic constants throughout. Add usb_check_bulk_endpoints() and usb_check_int_endpoints() calls after usb_set_interface() to verify endpoint types before use, rejecting devices with mismatched descriptors at probe time. Similar to - commit 90b7f2961798 (\"net: usb: rtl8150: enable basic endpoint checking\") which fixed the issue in rtl8150.",
"evidence": "osv:CVE-2026-45923",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.10.252",
"evidence": "/affected/1/ranges"
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{
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"evidence": "/affected/1/ranges"
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"severity": "unknown",
"structured": {
"id": "CVE-2026-45923",
"aliases": [
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],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
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{
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],
"modified": "2026-10-28T02:30:21.824240720Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/163d04897e57633c5d2e69734e4e4b22bb63f50d",
"https://git.kernel.org/stable/c/1a42cfced8900d33d032c7ec338484855b61b8cc",
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"https://git.kernel.org/stable/c/9e7021d2aeae57c323a6f722ed7915686cdcc123",
"https://git.kernel.org/stable/c/a488001a8197da4f9c413eec8f6acbff71c60145",
"https://git.kernel.org/stable/c/ac7739b78ded519e1d9919a814da3b34120bec8c",
"https://git.kernel.org/stable/c/eade522d3e6ac3f3bfb51bfa5b5b4b32bd0b846f",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45923.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-45923",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45923.json"
}
},
"related_cves": [
{
"value": "CVE-2026-45923",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 487975,
"published_at": "2026-05-27T12:17:42.312+00:00"
}