CVE-2022-50317
Estado: AnalizadaMedia (5.5)—
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:
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.
Detalles técnicos trazas, registros y código del informe original
[ 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
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 4
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-476
Referencias
- 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
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-50317",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7649972d97fb98578fbc4a351416cf72895e7c4d",
"lessThan": "aaa512ad1e59f2edf8a9e4f2b167a44b24670679",
"versionType": "git"
},
{
"status": "affected",
"version": "16e3827904932eccfba0915f0c93b519de3536ac",
"lessThan": "5bc20bafcd87ba0858ab772cefc7047cb51bc249",
"versionType": "git"
},
{
"status": "affected",
"version": "50ad94f8654a53ec9ca3604a7a23cbaf166e0119",
"lessThan": "1daf69228e310938177119c4eadcd30fc75c81e0",
"versionType": "git"
},
{
"status": "affected",
"version": "b8d10f601f226f055df8b5368d7ea7f369136cd5",
"lessThan": "877e92e9b1bdeb580b31a46061005936be902cd4",
"versionType": "git"
},
{
"status": "affected",
"version": "405856460d3e7aefb7c1aef047ec88fc4ef2e2a5",
"lessThan": "4610e7a4111fa3f3ce27c09d6d94008c55f1cd31",
"versionType": "git"
},
{
"status": "affected",
"version": "11632d4aa2b3f126790e81a4415d6c23103cf8bb",
"lessThan": "21764467ab396d9f08921e0a5ffa1214244e1ad9",
"versionType": "git"
},
{
"status": "affected",
"version": "11632d4aa2b3f126790e81a4415d6c23103cf8bb",
"lessThan": "7371fad5cfe6eada6bb5523c895fd6074b15c2b9",
"versionType": "git"
},
{
"status": "affected",
"version": "11632d4aa2b3f126790e81a4415d6c23103cf8bb",
"lessThan": "1ff673333d46d2c1b053ebd0c1c7c7c79e36943e",
"versionType": "git"
},
{
"status": "affected",
"version": "e449461989f0674f188d30494ffd3f5ba74c1a05",
"versionType": "git"
},
{
"status": "affected",
"version": "4.14.263",
"lessThan": "4.14.296",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.226",
"lessThan": "4.19.262",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.174",
"lessThan": "5.4.220",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.10.94",
"lessThan": "5.10.150",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.17",
"lessThan": "5.15.75",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.16.3",
"lessThan": "5.17",
"versionType": "semver"
}
],
"programFiles": [
"drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.14.296",
"versionType": "semver",
"lessThanOrEqual": "4.14.*"
},
{
"status": "unaffected",
"version": "4.19.262",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.220",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.150",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.75",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "5.19.17",
"versionType": "semver",
"lessThanOrEqual": "5.19.*"
},
{
"status": "unaffected",
"version": "6.0.3",
"versionType": "semver",
"lessThanOrEqual": "6.0.*"
},
{
"status": "unaffected",
"version": "6.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-09-15T15:15:43.620",
"references": [
{
"url": "https://git.kernel.org/stable/c/1daf69228e310938177119c4eadcd30fc75c81e0",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/1ff673333d46d2c1b053ebd0c1c7c7c79e36943e",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/21764467ab396d9f08921e0a5ffa1214244e1ad9",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4610e7a4111fa3f3ce27c09d6d94008c55f1cd31",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5bc20bafcd87ba0858ab772cefc7047cb51bc249",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7371fad5cfe6eada6bb5523c895fd6074b15c2b9",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/877e92e9b1bdeb580b31a46061005936be902cd4",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/aaa512ad1e59f2edf8a9e4f2b167a44b24670679",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: megachips: Fix a null pointer dereference bug\n\nWhen removing the module we will get the following warning:\n\n[ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered\n[ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI\n[ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\n[ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130\n[ 31.921825] Call Trace:\n[ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw]\n[ 31.923139] i2c_device_remove+0x181/0x1f0\n\nThe two bridges (stdp2690, stdp4028) do not probe at the same time, so\nthe driver does not call ge_b850v3_resgiter() when probing, causing the\ndriver to try to remove the object that has not been initialized.\n\nFix this by checking whether both the bridges are probed."
}
],
"lastModified": "2026-06-17T05:23:13.353",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E480380A-87CF-448C-8226-1F034A1F1304",
"versionEndExcluding": "4.14.296",
"versionStartIncluding": "4.14.263"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "34C6D73D-097B-42F8-83A1-3D4A90CA3491",
"versionEndExcluding": "4.19.262",
"versionStartIncluding": "4.19.226"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "378CC5F0-BA13-4A55-A21C-BD1BF566BEB1",
"versionEndExcluding": "5.4.220",
"versionStartIncluding": "5.4.174"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "31F15608-CE37-4F08-B7DF-A8560D7F6E49",
"versionEndExcluding": "5.10.150",
"versionStartIncluding": "5.10.94"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B8C3A451-258D-4D9D-94DA-03F0157D78B5",
"versionEndExcluding": "5.15.75",
"versionStartIncluding": "5.15.17"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D67191C4-2452-46FC-A030-D9838CD1E1CE",
"versionEndExcluding": "5.19.17",
"versionStartIncluding": "5.16.3"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5BCD8201-B847-4442-B894-70D430128DEF",
"versionEndExcluding": "6.0.3",
"versionStartIncluding": "6.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}