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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-2024-42304" ,
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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\next4: make sure the first directory block is not a hole\n\nThe syzbot constructs a directory that has no dirblock but is non-inline,\ni.e. the first directory block is a hole. And no errors are reported when\ncreating files in this directory in the following flow.\n\n ext4_mknod\n ...\n ext4_add_entry\n // Read block 0\n ext4_read_dirblock(dir, block, DIRENT)\n bh = ext4_bread(NULL, inode, block, 0)\n if (!bh && (type == INDEX || type == DIRENT_HTREE))\n // The first directory block is a hole\n // But type == DIRENT, so no error is reported.\n\nAfter that, we get a directory block without '.' and '..' but with a valid\ndentry. This may cause some code that relies on dot or dotdot (such as\nmake_indexed_dir()) to crash.\n\nTherefore when ext4_read_dirblock() finds that the first directory block\nis a hole report that the filesystem is corrupted and return an error to\navoid loading corrupted data from disk causing something bad."
}
]
} ,
"problemtype" : {
"problemtype_data" : [
{
"description" : [
{
"lang" : "eng" ,
"value" : "n/a"
}
]
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}
]
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} ,
"affects" : {
"vendor" : {
"vendor_data" : [
{
"vendor_name" : "Linux" ,
"product" : {
"product_data" : [
{
"product_name" : "Linux" ,
"version" : {
"version_data" : [
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{
"version_affected" : "<" ,
"version_name" : "3a17ca864baf" ,
"version_value" : "d81d7e347d1f"
} ,
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{
"version_affected" : "<" ,
"version_name" : "4e19d6b65fb4" ,
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"version_value" : "e02f9941e8c0"
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} ,
{
"version_value" : "not down converted" ,
"x_cve_json_5_version_data" : {
"versions" : [
{
"version" : "5.3" ,
"status" : "affected"
} ,
{
"version" : "0" ,
"lessThan" : "5.3" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
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{
"version" : "4.19.320" ,
"lessThanOrEqual" : "4.19.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.4.282" ,
"lessThanOrEqual" : "5.4.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.10.224" ,
"lessThanOrEqual" : "5.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.15.165" ,
"lessThanOrEqual" : "5.15.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
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{
"version" : "6.1.103" ,
"lessThanOrEqual" : "6.1.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.6.44" ,
"lessThanOrEqual" : "6.6.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.10.3" ,
"lessThanOrEqual" : "6.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
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"version" : "6.11" ,
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"lessThanOrEqual" : "*" ,
"status" : "unaffected" ,
"versionType" : "original_commit_for_fix"
}
] ,
"defaultStatus" : "affected"
}
}
]
}
}
]
}
}
]
}
} ,
"references" : {
"reference_data" : [
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{
"url" : "https://git.kernel.org/stable/c/d81d7e347d1f1f48a5634607d39eb90c161c8afe" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/d81d7e347d1f1f48a5634607d39eb90c161c8afe"
} ,
{
"url" : "https://git.kernel.org/stable/c/e02f9941e8c011aa3eafa799def6a134ce06bcfa" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/e02f9941e8c011aa3eafa799def6a134ce06bcfa"
} ,
{
"url" : "https://git.kernel.org/stable/c/de2a011a13a46468a6e8259db58b1b62071fe136" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/de2a011a13a46468a6e8259db58b1b62071fe136"
} ,
{
"url" : "https://git.kernel.org/stable/c/9771e3d8365ae1dd5e8846a204cb9af14e3e656a" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/9771e3d8365ae1dd5e8846a204cb9af14e3e656a"
} ,
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{
"url" : "https://git.kernel.org/stable/c/b609753cbbd38f8c0affd4956c0af178348523ac" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/b609753cbbd38f8c0affd4956c0af178348523ac"
} ,
{
"url" : "https://git.kernel.org/stable/c/c3893d9de8ee153baac56d127d844103488133b5" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/c3893d9de8ee153baac56d127d844103488133b5"
} ,
{
"url" : "https://git.kernel.org/stable/c/299bc6ffa57e04e74c6cce866d6c0741fb4897a1" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/299bc6ffa57e04e74c6cce866d6c0741fb4897a1"
} ,
{
"url" : "https://git.kernel.org/stable/c/f9ca51596bbfd0f9c386dd1c613c394c78d9e5e6" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/f9ca51596bbfd0f9c386dd1c613c394c78d9e5e6"
}
]
} ,
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