UnratedFix available
drm/bridge: megachips: Fix a null pointer dereference bug
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.296, 4.19.262, 5.10.150, 5.15.75, 5.19.17, 5.4.220, 6.0.3
- CVEs
- CVE-2022-50317
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 08:06 UTC · Revision 1
Source evidence
drm/bridge: megachips: Fix a null pointer dereference bug
core-osv · Original sourcePublished 15 Sept 2025, 14:48 UTC
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed.
osv:CVE-2022-50317
Kernel
Fixed versions: 4.14.296, 4.19.262, 5.4.220, 5.10.150, 5.15.75, 5.19.17, 6.0.3
Complete source record
{
"id": "518444065e44e4ecdfdc92487992c679a8c91921daa2c620e7da1c878238a322",
"url": "https://osv.dev/vulnerability/CVE-2022-50317",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "drm/bridge: megachips: Fix a null pointer dereference bug",
"summary": "In the Linux kernel, the following vulnerability has been resolved: drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed.",
"evidence": "osv:CVE-2022-50317",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.14.296",
"evidence": "/affected/1/ranges"
},
{
"value": "4.19.262",
"evidence": "/affected/1/ranges"
},
{
"value": "5.4.220",
"evidence": "/affected/1/ranges"
},
{
"value": "5.10.150",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.75",
"evidence": "/affected/1/ranges"
},
{
"value": "5.19.17",
"evidence": "/affected/1/ranges"
},
{
"value": "6.0.3",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2022-50317",
"aliases": [
"CVE-2022-50317"
],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "7649972d97fb98578fbc4a351416cf72895e7c4d"
},
{
"fixed": "aaa512ad1e59f2edf8a9e4f2b167a44b24670679"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "16e3827904932eccfba0915f0c93b519de3536ac"
},
{
"fixed": "5bc20bafcd87ba0858ab772cefc7047cb51bc249"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "50ad94f8654a53ec9ca3604a7a23cbaf166e0119"
},
{
"fixed": "1daf69228e310938177119c4eadcd30fc75c81e0"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "b8d10f601f226f055df8b5368d7ea7f369136cd5"
},
{
"fixed": "877e92e9b1bdeb580b31a46061005936be902cd4"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "405856460d3e7aefb7c1aef047ec88fc4ef2e2a5"
},
{
"fixed": "4610e7a4111fa3f3ce27c09d6d94008c55f1cd31"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "11632d4aa2b3f126790e81a4415d6c23103cf8bb"
},
{
"fixed": "21764467ab396d9f08921e0a5ffa1214244e1ad9"
},
{
"fixed": "7371fad5cfe6eada6bb5523c895fd6074b15c2b9"
},
{
"fixed": "1ff673333d46d2c1b053ebd0c1c7c7c79e36943e"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "4.14.263"
},
{
"fixed": "4.14.296"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "4.19.226"
},
{
"fixed": "4.19.262"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.4.174"
},
{
"fixed": "5.4.220"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.10.94"
},
{
"fixed": "5.10.150"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.15.17"
},
{
"fixed": "5.15.75"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "5.16.3"
},
{
"fixed": "5.17"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "e449461989f0674f188d30494ffd3f5ba74c1a05"
}
]
}
],
"versions": [
"v4.14.295",
"v4.14.294",
"v4.14.293",
"v4.14.292",
"v4.14.291",
"v4.14.290",
"v4.14.289",
"v4.14.288",
"v4.14.287",
"v4.14.286",
"v4.14.285",
"v4.14.284",
"v4.14.283",
"v4.14.282",
"v4.14.281",
"v4.14.280",
"v4.14.279",
"v4.14.278",
"v4.14.277",
"v4.14.276",
"v4.14.275",
"v4.14.274",
"v4.14.273",
"v4.14.272",
"v4.14.271",
"v4.14.270",
"v4.14.269",
"v4.14.268",
"v4.14.267",
"v4.14.266",
"v4.14.265",
"v4.14.264",
"v4.14.263",
"v4.19.261",
"v4.19.260",
"v4.19.259",
"v4.19.258",
"v4.19.257",
"v4.19.256",
"v4.19.255",
"v4.19.254",
"v4.19.253",
"v4.19.252",
"v4.19.251",
"v4.19.250",
"v4.19.249",
"v4.19.248",
"v4.19.247",
"v4.19.246",
"v4.19.245",
"v4.19.244",
"v4.19.243",
"v4.19.242",
"v4.19.241",
"v4.19.240",
"v4.19.239",
"v4.19.238",
"v4.19.237",
"v4.19.236",
"v4.19.235",
"v4.19.234",
"v4.19.233",
"v4.19.232",
"v4.19.231",
"v4.19.230",
"v4.19.229",
"v4.19.228",
"v4.19.227",
"v4.19.226",
"v5.4.219",
"v5.4.218",
"v5.4.217",
"v5.4.216",
"v5.4.215",
"v5.4.214",
"v5.4.213",
"v5.4.212",
"v5.4.211",
"v5.4.210",
"v5.4.209",
"v5.4.208",
"v5.4.207",
"v5.4.206",
"v5.4.205",
"v5.4.204",
"v5.4.203",
"v5.4.202",
"v5.4.201",
"v5.4.200",
"v5.4.199",
"v5.4.198",
"v5.4.197",
"v5.4.196",
"v5.4.195",
"v5.4.194",
"v5.4.193",
"v5.4.192",
"v5.4.191",
"v5.4.190",
"v5.4.189",
"v5.4.188",
"v5.4.187",
"v5.4.186",
"v5.4.185",
"v5.4.184",
"v5.4.183",
"v5.4.182",
"v5.4.181",
"v5.4.180",
"v5.4.179",
"v5.4.178",
"v5.4.177",
"v5.4.176",
"v5.4.175",
"v5.4.174",
"v5.10.149",
"v5.10.148",
"v5.10.147",
"v5.10.146",
"v5.10.145",
"v5.10.144",
"v5.10.143",
"v5.10.142",
"v5.10.141",
"v5.10.140",
"v5.10.139",
"v5.10.138",
"v5.10.137",
"v5.10.136",
"v5.10.135",
"v5.10.134",
"v5.10.133",
"v5.10.132",
"v5.10.131",
"v5.10.130",
"v5.10.129",
"v5.10.128",
"v5.10.127",
"v5.10.126",
"v5.10.125",
"v5.10.124",
"v5.10.123",
"v5.10.122",
"v5.10.121",
"v5.10.120",
"v5.10.119",
"v5.10.118",
"v5.10.117",
"v5.10.116",
"v5.10.115",
"v5.10.114",
"v5.10.113",
"v5.10.112",
"v5.10.111",
"v5.10.110",
"v5.10.109",
"v5.10.108",
"v5.10.107",
"v5.10.106",
"v5.10.105",
"v5.10.104",
"v5.10.103",
"v5.10.102",
"v5.10.101",
"v5.10.100",
"v5.10.99",
"v5.10.98",
"v5.10.97",
"v5.10.96",
"v5.10.95",
"v5.10.94",
"v5.15.74",
"v5.15.73",
"v5.15.72",
"v5.15.71",
"v5.15.70",
"v5.15.69",
"v5.15.68",
"v5.15.67",
"v5.15.66",
"v5.15.65",
"v5.15.64",
"v5.15.63",
"v5.15.62",
"v5.15.61",
"v5.15.60",
"v5.15.59",
"v5.15.58",
"v5.15.57",
"v5.15.56",
"v5.15.55",
"v5.15.54",
"v5.15.53",
"v5.15.52",
"v5.15.51",
"v5.15.50",
"v5.15.49",
"v5.15.48",
"v5.15.47",
"v5.15.46",
"v5.15.45",
"v5.15.44",
"v5.15.43",
"v5.15.42",
"v5.15.41",
"v5.15.40",
"v5.15.39",
"v5.15.38",
"v5.15.37",
"v5.15.36",
"v5.15.35",
"v5.15.34",
"v5.15.33",
"v5.15.32",
"v5.15.31",
"v5.15.30",
"v5.15.29",
"v5.15.28",
"v5.15.27",
"v5.15.26",
"v5.15.25",
"v5.15.24",
"v5.15.23",
"v5.15.22",
"v5.15.21",
"v5.15.20",
"v5.15.19",
"v5.15.18",
"v5.15.17",
"v5.16.20",
"v5.16.19",
"v5.16.18",
"v5.16.17",
"v5.16.16",
"v5.16.15",
"v5.16.14",
"v5.16.13",
"v5.16.12",
"v5.16.11",
"v5.16.10",
"v5.16.9",
"v5.16.8",
"v5.16.7",
"v5.16.6",
"v5.16.5",
"v5.16.4",
"v5.16.3"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50317.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.14.296"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.15.0"
},
{
"fixed": "4.19.262"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.20.0"
},
{
"fixed": "5.4.220"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.5.0"
},
{
"fixed": "5.10.150"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.75"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "5.19.17"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.17.0"
},
{
"fixed": "6.0.3"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50317.json"
}
}
],
"modified": "2026-10-28T02:30:50.456368486Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/1daf69228e310938177119c4eadcd30fc75c81e0",
"https://git.kernel.org/stable/c/1ff673333d46d2c1b053ebd0c1c7c7c79e36943e",
"https://git.kernel.org/stable/c/21764467ab396d9f08921e0a5ffa1214244e1ad9",
"https://git.kernel.org/stable/c/4610e7a4111fa3f3ce27c09d6d94008c55f1cd31",
"https://git.kernel.org/stable/c/5bc20bafcd87ba0858ab772cefc7047cb51bc249",
"https://git.kernel.org/stable/c/7371fad5cfe6eada6bb5523c895fd6074b15c2b9",
"https://git.kernel.org/stable/c/877e92e9b1bdeb580b31a46061005936be902cd4",
"https://git.kernel.org/stable/c/aaa512ad1e59f2edf8a9e4f2b167a44b24670679",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50317.json",
"https://nvd.nist.gov/vuln/detail/CVE-2022-50317",
"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/2022/50xxx/CVE-2022-50317.json"
}
},
"related_cves": [
{
"value": "CVE-2022-50317",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 518706,
"published_at": "2025-09-15T14:48:50.167+00:00"
}