UnratedFix available
can: bcm: fix locking for bcm_op runtime updates
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: can: bcm: fix locking for bcm_op runtime updates Commit c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates") added a locking for some variables that can be modified at runtime when updating the sending bcm_op with a new TX_SETUP command in bcm_tx_setup(). Usually the RX_SETUP only handles and filters incoming traffic with one exception: When the RX_RTR_FRAME flag is set a predefined CAN frame is sent when a specific RTR frame is received. Therefore the rx bcm_op uses bcm_can_tx() which uses the bcm_tx_lock that was only initialized in bcm_tx_setup(). Add the missing spin_lock_init() when allocating the bcm_op in bcm_rx_setup() to handle the RTR case properly.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.253, 5.15.203, 6.1.167, 6.12.77, 6.18.17, 6.19.7, 6.6.130
- CVEs
- CVE-2026-23362
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 16:14 UTC · Revision 1
Source evidence
can: bcm: fix locking for bcm_op runtime updates
core-osv · Original sourcePublished 25 Mar 2026, 10:27 UTC
In the Linux kernel, the following vulnerability has been resolved: can: bcm: fix locking for bcm_op runtime updates Commit c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates") added a locking for some variables that can be modified at runtime when updating the sending bcm_op with a new TX_SETUP command in bcm_tx_setup(). Usually the RX_SETUP only handles and filters incoming traffic with one exception: When the RX_RTR_FRAME flag is set a predefined CAN frame is sent when a specific RTR frame is received. Therefore the rx bcm_op uses bcm_can_tx() which uses the bcm_tx_lock that was only initialized in bcm_tx_setup(). Add the missing spin_lock_init() when allocating the bcm_op in bcm_rx_setup() to handle the RTR case properly.
osv:CVE-2026-23362
Kernel
Fixed versions: 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.77, 6.18.17, 6.19.7
Complete source record
{
"id": "7a4103dd6bf2228ef6288b81d00148faec855a62a783ccbc6b2d25d67a8f4af5",
"url": "https://osv.dev/vulnerability/CVE-2026-23362",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "can: bcm: fix locking for bcm_op runtime updates",
"summary": "In the Linux kernel, the following vulnerability has been resolved: can: bcm: fix locking for bcm_op runtime updates Commit c2aba69d0c36 (\"can: bcm: add locking for bcm_op runtime updates\") added a locking for some variables that can be modified at runtime when updating the sending bcm_op with a new TX_SETUP command in bcm_tx_setup(). Usually the RX_SETUP only handles and filters incoming traffic with one exception: When the RX_RTR_FRAME flag is set a predefined CAN frame is sent when a specific RTR frame is received. Therefore the rx bcm_op uses bcm_can_tx() which uses the bcm_tx_lock that was only initialized in bcm_tx_setup(). Add the missing spin_lock_init() when allocating the bcm_op in bcm_rx_setup() to handle the RTR case properly.",
"evidence": "osv:CVE-2026-23362",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.10.253",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.203",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.167",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.130",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.77",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.17",
"evidence": "/affected/1/ranges"
},
{
"value": "6.19.7",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-23362",
"aliases": [
"CVE-2026-23362"
],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "7595de7bc56e0e52b74e56c90f7e247bf626d628"
},
{
"fixed": "0904037e713f787d1376e1d349c3bdf6c3105881"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "fbd8fdc2b218e979cfe422b139b8f74c12419d1f"
},
{
"fixed": "c85b96eaf766d8f066b1139a17a51efa2f6627ef"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "2a437b86ac5a9893c902f30ef66815bf13587bf6"
},
{
"fixed": "800f26f11ae37b17f58e0001f28a47dd75c26557"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "76c84c3728178b2d38d5604e399dfe8b0752645e"
},
{
"fixed": "70e951afad4c025261fe3c952d2b07237e320a01"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "cc55dd28c20a6611e30596019b3b2f636819a4c0"
},
{
"fixed": "8bcf2d847adb82b2c617456f6da17ac5e6c75285"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7"
},
{
"fixed": "8215ba7bc99e84e66fd6938874ec4330a9d96518"
},
{
"fixed": "f0c349b2c21b220af5ba19f29b885e222958d796"
},
{
"fixed": "c35636e91e392e1540949bbc67932167cb48bc3a"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.10.238"
},
{
"fixed": "5.10.253"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.15.185"
},
{
"fixed": "5.15.203"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "6.1.141"
},
{
"fixed": "6.1.167"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "6.6.93"
},
{
"fixed": "6.6.130"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "6.12.31"
},
{
"fixed": "6.12.77"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.4.294"
},
{
"fixed": "5.5"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "6.14.9"
},
{
"fixed": "6.15"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "8f1c022541bf5a923c8d6fa483112c15250f30a4"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "c4e8a172501e677ebd8ea9d9161d97dc4df56fbd"
}
]
}
],
"versions": [
"v5.10.252",
"v5.10.251",
"v5.10.250",
"v5.10.249",
"v5.10.248",
"v5.10.247",
"v5.10.246",
"v5.10.245",
"v5.10.244",
"v5.10.243",
"v5.10.242",
"v5.10.241",
"v5.10.240",
"v5.10.239",
"v5.10.238",
"v5.15.202",
"v5.15.201",
"v5.15.200",
"v5.15.199",
"v5.15.198",
"v5.15.197",
"v5.15.196",
"v5.15.195",
"v5.15.194",
"v5.15.193",
"v5.15.192",
"v5.15.191",
"v5.15.190",
"v5.15.189",
"v5.15.188",
"v5.15.187",
"v5.15.186",
"v5.15.185",
"v6.1.166",
"v6.1.165",
"v6.1.164",
"v6.1.163",
"v6.1.162",
"v6.1.161",
"v6.1.160",
"v6.1.159",
"v6.1.158",
"v6.1.157",
"v6.1.156",
"v6.1.155",
"v6.1.154",
"v6.1.153",
"v6.1.152",
"v6.1.151",
"v6.1.150",
"v6.1.149",
"v6.1.148",
"v6.1.147",
"v6.1.146",
"v6.1.145",
"v6.1.144",
"v6.1.143",
"v6.1.142",
"v6.1.141",
"v6.6.129",
"v6.6.128",
"v6.6.127",
"v6.6.126",
"v6.6.125",
"v6.6.124",
"v6.6.123",
"v6.6.122",
"v6.6.121",
"v6.6.120",
"v6.6.119",
"v6.6.118",
"v6.6.117",
"v6.6.116",
"v6.6.115",
"v6.6.114",
"v6.6.113",
"v6.6.112",
"v6.6.111",
"v6.6.110",
"v6.6.109",
"v6.6.108",
"v6.6.107",
"v6.6.106",
"v6.6.105",
"v6.6.104",
"v6.6.103",
"v6.6.102",
"v6.6.101",
"v6.6.100",
"v6.6.99",
"v6.6.98",
"v6.6.97",
"v6.6.96",
"v6.6.95",
"v6.6.94",
"v6.6.93",
"v6.12.76",
"v6.12.75",
"v6.12.74",
"v6.12.73",
"v6.12.72",
"v6.12.71",
"v6.12.70",
"v6.12.69",
"v6.12.68",
"v6.12.67",
"v6.12.66",
"v6.12.65",
"v6.12.64",
"v6.12.63",
"v6.12.62",
"v6.12.61",
"v6.12.60",
"v6.12.59",
"v6.12.58",
"v6.12.57",
"v6.12.56",
"v6.12.55",
"v6.12.54",
"v6.12.53",
"v6.12.52",
"v6.12.51",
"v6.12.50",
"v6.12.49",
"v6.12.48",
"v6.12.47",
"v6.12.46",
"v6.12.45",
"v6.12.44",
"v6.12.43",
"v6.12.42",
"v6.12.41",
"v6.12.40",
"v6.12.39",
"v6.12.38",
"v6.12.37",
"v6.12.36",
"v6.12.35",
"v6.12.34",
"v6.12.33",
"v6.12.32",
"v6.12.31",
"v5.4.302",
"v5.4.301",
"v5.4.300",
"v5.4.299",
"v5.4.298",
"v5.4.297",
"v5.4.296",
"v5.4.295",
"v5.4.294",
"v6.14.11",
"v6.14.10",
"v6.14.9"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23362.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.10.253"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.203"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "6.1.167"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.6.130"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
},
{
"fixed": "6.12.77"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.17"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.15.0"
},
{
"fixed": "6.19.7"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23362.json"
}
}
],
"modified": "2026-10-28T02:30:21.114583794Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/0904037e713f787d1376e1d349c3bdf6c3105881",
"https://git.kernel.org/stable/c/70e951afad4c025261fe3c952d2b07237e320a01",
"https://git.kernel.org/stable/c/800f26f11ae37b17f58e0001f28a47dd75c26557",
"https://git.kernel.org/stable/c/8215ba7bc99e84e66fd6938874ec4330a9d96518",
"https://git.kernel.org/stable/c/8bcf2d847adb82b2c617456f6da17ac5e6c75285",
"https://git.kernel.org/stable/c/c35636e91e392e1540949bbc67932167cb48bc3a",
"https://git.kernel.org/stable/c/c85b96eaf766d8f066b1139a17a51efa2f6627ef",
"https://git.kernel.org/stable/c/f0c349b2c21b220af5ba19f29b885e222958d796",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23362.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-23362",
"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/2026/23xxx/CVE-2026-23362.json"
}
},
"related_cves": [
{
"value": "CVE-2026-23362",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 486983,
"published_at": "2026-03-25T10:27:45.476+00:00"
}