can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents
In the Linux kernel, the following vulnerability has been resolved: can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents The wait and bulk receive paths walk variable-length commands from a USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be dispatched, and the wait path copies a matching command into a fixed caller-owned struct kvaser_cmd using the device-provided length. Reject nonzero commands that do not contain the fixed header or that extend beyond the current USB buffer item. In the wait path, also reject a matching command that exceeds the destination before copying it.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.265, 5.15.216, 6.1.183, 6.12.103, 6.18.44, 6.6.151, 7.1.8
- CVEs
- CVE-2026-74458
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 16:18 UTC · Revision 1
Source evidence
can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents
core-osv · Original sourcePublished 15 Aug 2026, 12:27 UTC
In the Linux kernel, the following vulnerability has been resolved: can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents The wait and bulk receive paths walk variable-length commands from a USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be dispatched, and the wait path copies a matching command into a fixed caller-owned struct kvaser_cmd using the device-provided length. Reject nonzero commands that do not contain the fixed header or that extend beyond the current USB buffer item. In the wait path, also reject a matching command that exceeds the destination before copying it.
osv:CVE-2026-74458
Kernel
Fixed versions: 5.10.265, 5.15.216, 6.1.183, 6.6.151, 6.12.103, 6.18.44, 7.1.8
Complete source record
{
"id": "02ddd33469d9df2412e5746fc3d438a09bdf3b265ae015a5fed12bbf41baeee9",
"url": "https://osv.dev/vulnerability/CVE-2026-74458",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents",
"summary": "In the Linux kernel, the following vulnerability has been resolved: can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents The wait and bulk receive paths walk variable-length commands from a USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be dispatched, and the wait path copies a matching command into a fixed caller-owned struct kvaser_cmd using the device-provided length. Reject nonzero commands that do not contain the fixed header or that extend beyond the current USB buffer item. In the wait path, also reject a matching command that exceeds the destination before copying it.",
"evidence": "osv:CVE-2026-74458",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.10.265",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.216",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.183",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.151",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.103",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.44",
"evidence": "/affected/1/ranges"
},
{
"value": "7.1.8",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-74458",
"aliases": [
"CVE-2026-74458"
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"affected": [
{
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
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{
"fixed": "c00ec53d7dec08134e97071850cc00ef000c5b77"
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{
"fixed": "d9e91672526ffa279709b15490118aea1bdee714"
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{
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{
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{
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{
"fixed": "21f0465fd86d77794aaed8e05f833634f68d178d"
},
{
"fixed": "0293dd153f9dbc1ddf5dacdccc76b363bce4a8ee"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74458.json"
}
},
{
"ranges": [
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"type": "ECOSYSTEM",
"events": [
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{
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{
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"events": [
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"introduced": "5.11.0"
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{
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"events": [
{
"introduced": "5.16.0"
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{
"fixed": "6.1.183"
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},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
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{
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]
},
{
"type": "ECOSYSTEM",
"events": [
{
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{
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]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
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{
"fixed": "6.18.44"
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]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "7.1.8"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74458.json"
}
}
],
"modified": "2026-10-28T02:30:30.165541554Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/0293dd153f9dbc1ddf5dacdccc76b363bce4a8ee",
"https://git.kernel.org/stable/c/185cb1fa38142a3cbf223dd8b3abb24217f330d3",
"https://git.kernel.org/stable/c/21f0465fd86d77794aaed8e05f833634f68d178d",
"https://git.kernel.org/stable/c/3d0897ec623e422695d70d80ae456f89476c5328",
"https://git.kernel.org/stable/c/695aea154bb2d453e6daada1510972fafd075285",
"https://git.kernel.org/stable/c/72f96c2942f11a0ae8663adcb3d9ee986e07d4fa",
"https://git.kernel.org/stable/c/c00ec53d7dec08134e97071850cc00ef000c5b77",
"https://git.kernel.org/stable/c/d9e91672526ffa279709b15490118aea1bdee714",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74458.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-74458",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74458.json"
}
},
"related_cves": [
{
"value": "CVE-2026-74458",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 497256,
"published_at": "2026-08-15T12:27:00.053+00:00"
}