gsd-2021-47063
Vulnerability from gsd
Modified
2024-03-01 06:04
Details
In the Linux kernel, the following vulnerability has been resolved:
drm: bridge/panel: Cleanup connector on bridge detach
If we don't call drm_connector_cleanup() manually in
panel_bridge_detach(), the connector will be cleaned up with the other
DRM objects in the call to drm_mode_config_cleanup(). However, since our
drm_connector is devm-allocated, by the time drm_mode_config_cleanup()
will be called, our connector will be long gone. Therefore, the
connector must be cleaned up when the bridge is detached to avoid
use-after-free conditions.
v2: Cleanup connector only if it was created
v3: Add FIXME
v4: (Use connector->dev) directly in if() block
Aliases
{ "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2021-47063" ], "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: bridge/panel: Cleanup connector on bridge detach\n\nIf we don\u0027t call drm_connector_cleanup() manually in\npanel_bridge_detach(), the connector will be cleaned up with the other\nDRM objects in the call to drm_mode_config_cleanup(). However, since our\ndrm_connector is devm-allocated, by the time drm_mode_config_cleanup()\nwill be called, our connector will be long gone. Therefore, the\nconnector must be cleaned up when the bridge is detached to avoid\nuse-after-free conditions.\n\nv2: Cleanup connector only if it was created\n\nv3: Add FIXME\n\nv4: (Use connector-\u003edev) directly in if() block", "id": "GSD-2021-47063", "modified": "2024-03-01T06:04:48.293726Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@kernel.org", "ID": "CVE-2021-47063", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "\u003c", "version_name": "13dfc0540a57", "version_value": "ce450934a00c" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "defaultStatus": "affected", "versions": [ { "status": "affected", "version": "4.13" }, { "lessThan": "4.13", "status": "unaffected", "version": "0", "versionType": "custom" }, { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.37", "versionType": "custom" }, { "lessThanOrEqual": "5.11.*", "status": "unaffected", "version": "5.11.21", "versionType": "custom" }, { "lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.4", "versionType": "custom" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix" } ] } } ] } } ] }, "vendor_name": "Linux" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: bridge/panel: Cleanup connector on bridge detach\n\nIf we don\u0027t call drm_connector_cleanup() manually in\npanel_bridge_detach(), the connector will be cleaned up with the other\nDRM objects in the call to drm_mode_config_cleanup(). However, since our\ndrm_connector is devm-allocated, by the time drm_mode_config_cleanup()\nwill be called, our connector will be long gone. Therefore, the\nconnector must be cleaned up when the bridge is detached to avoid\nuse-after-free conditions.\n\nv2: Cleanup connector only if it was created\n\nv3: Add FIXME\n\nv4: (Use connector-\u003edev) directly in if() block" } ] }, "generator": { "engine": "bippy-4986f5686161" }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2" }, { "name": "https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1" }, { "name": "https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327" }, { "name": "https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0" } ] } }, "nvd.nist.gov": { "cve": { "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: bridge/panel: Cleanup connector on bridge detach\n\nIf we don\u0027t call drm_connector_cleanup() manually in\npanel_bridge_detach(), the connector will be cleaned up with the other\nDRM objects in the call to drm_mode_config_cleanup(). However, since our\ndrm_connector is devm-allocated, by the time drm_mode_config_cleanup()\nwill be called, our connector will be long gone. Therefore, the\nconnector must be cleaned up when the bridge is detached to avoid\nuse-after-free conditions.\n\nv2: Cleanup connector only if it was created\n\nv3: Add FIXME\n\nv4: (Use connector-\u003edev) directly in if() block" }, { "lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm: bridge/panel: Limpiar conector en bridge detach Si no llamamos a drm_connector_cleanup() manualmente en panel_bridge_detach(), el conector se limpiar\u00e1 con los dem\u00e1s objetos DRM en la llamada a drm_mode_config_cleanup(). Sin embargo, dado que nuestro drm_connector est\u00e1 asignado por devm, para cuando se llame a drm_mode_config_cleanup(), nuestro conector ya no existir\u00e1. Por lo tanto, el conector debe limpiarse cuando se retira el puente para evitar condiciones de uso despu\u00e9s de su liberaci\u00f3n. v2: Limpiar el conector solo si fue creado v3: Agregar FIXME v4: (Usar conector-\u0026gt;dev) directamente en el bloque if()" } ], "id": "CVE-2021-47063", "lastModified": "2024-03-01T14:04:26.010", "metrics": {}, "published": "2024-02-29T23:15:07.893", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis" } } } }
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Sightings
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Nomenclature
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