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{
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"data_version" : "4.0" ,
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"data_type" : "CVE" ,
"data_format" : "MITRE" ,
"CVE_data_meta" : {
"ID" : "CVE-2021-47334" ,
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"ASSIGNER" : "cve@kernel.org" ,
"STATE" : "PUBLIC"
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} ,
"description" : {
"description_data" : [
{
"lang" : "eng" ,
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"value" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc/libmasm/module: Fix two use after free in ibmasm_init_one\n\nIn ibmasm_init_one, it calls ibmasm_init_remote_input_dev().\nInside ibmasm_init_remote_input_dev, mouse_dev and keybd_dev are\nallocated by input_allocate_device(), and assigned to\nsp->remote.mouse_dev and sp->remote.keybd_dev respectively.\n\nIn the err_free_devices error branch of ibmasm_init_one,\nmouse_dev and keybd_dev are freed by input_free_device(), and return\nerror. Then the execution runs into error_send_message error branch\nof ibmasm_init_one, where ibmasm_free_remote_input_dev(sp) is called\nto unregister the freed sp->remote.mouse_dev and sp->remote.keybd_dev.\n\nMy patch add a \"error_init_remote\" label to handle the error of\nibmasm_init_remote_input_dev(), to avoid the uaf bugs."
}
]
} ,
"problemtype" : {
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{
"description" : [
{
"lang" : "eng" ,
"value" : "n/a"
}
]
}
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} ,
"affects" : {
"vendor" : {
"vendor_data" : [
{
"vendor_name" : "Linux" ,
"product" : {
"product_data" : [
{
"product_name" : "Linux" ,
"version" : {
"version_data" : [
{
"version_affected" : "<" ,
"version_name" : "1da177e4c3f4" ,
"version_value" : "1512e7dc5eb0"
} ,
{
"version_value" : "not down converted" ,
"x_cve_json_5_version_data" : {
"versions" : [
{
"version" : "4.4.276" ,
"lessThanOrEqual" : "4.4.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "4.9.276" ,
"lessThanOrEqual" : "4.9.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "4.14.240" ,
"lessThanOrEqual" : "4.14.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "4.19.198" ,
"lessThanOrEqual" : "4.19.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.4.134" ,
"lessThanOrEqual" : "5.4.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.10.52" ,
"lessThanOrEqual" : "5.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.12.19" ,
"lessThanOrEqual" : "5.12.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.13.4" ,
"lessThanOrEqual" : "5.13.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.14" ,
"lessThanOrEqual" : "*" ,
"status" : "unaffected" ,
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"versionType" : "original_commit_for_fix"
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}
] ,
"defaultStatus" : "affected"
}
}
]
}
}
]
}
}
]
}
} ,
"references" : {
"reference_data" : [
{
"url" : "https://git.kernel.org/stable/c/1512e7dc5eb08b7d92a12e2bfcd9cb8c4a1ec069" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/1512e7dc5eb08b7d92a12e2bfcd9cb8c4a1ec069"
} ,
{
"url" : "https://git.kernel.org/stable/c/29ba8e2ba89ee2862a26d91204dd5fe77ceee25a" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/29ba8e2ba89ee2862a26d91204dd5fe77ceee25a"
} ,
{
"url" : "https://git.kernel.org/stable/c/5b06ca113bf197aab2ab61288f42506e0049fbab" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/5b06ca113bf197aab2ab61288f42506e0049fbab"
} ,
{
"url" : "https://git.kernel.org/stable/c/481a76d4749ee3a27f902ba213fdcbb4bb39720e" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/481a76d4749ee3a27f902ba213fdcbb4bb39720e"
} ,
{
"url" : "https://git.kernel.org/stable/c/38660031e80eaa6cc9370b031c180612f414b00d" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/38660031e80eaa6cc9370b031c180612f414b00d"
} ,
{
"url" : "https://git.kernel.org/stable/c/b9c87ce3bc6331f82811a8cf8e930423c22523a3" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/b9c87ce3bc6331f82811a8cf8e930423c22523a3"
} ,
{
"url" : "https://git.kernel.org/stable/c/ef1067d2baa847d53c9988510d99fb494de4d12c" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/ef1067d2baa847d53c9988510d99fb494de4d12c"
} ,
{
"url" : "https://git.kernel.org/stable/c/a7268e8a227d5a4f0bd1584f556246b0224ab274" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/a7268e8a227d5a4f0bd1584f556246b0224ab274"
} ,
{
"url" : "https://git.kernel.org/stable/c/7272b591c4cb9327c43443f67b8fbae7657dd9ae" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/7272b591c4cb9327c43443f67b8fbae7657dd9ae"
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}
]
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