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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-2024-39495" ,
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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\ngreybus: Fix use-after-free bug in gb_interface_release due to race condition.\n\nIn gb_interface_create, &intf->mode_switch_completion is bound with\ngb_interface_mode_switch_work. Then it will be started by\ngb_interface_request_mode_switch. Here is the relevant code.\nif (!queue_work(system_long_wq, &intf->mode_switch_work)) {\n\t...\n}\n\nIf we call gb_interface_release to make cleanup, there may be an\nunfinished work. This function will call kfree to free the object\n\"intf\". However, if gb_interface_mode_switch_work is scheduled to\nrun after kfree, it may cause use-after-free error as\ngb_interface_mode_switch_work will use the object \"intf\".\nThe possible execution flow that may lead to the issue is as follows:\n\nCPU0 CPU1\n\n | gb_interface_create\n | gb_interface_request_mode_switch\ngb_interface_release |\nkfree(intf) (free) |\n | gb_interface_mode_switch_work\n | mutex_lock(&intf->mutex) (use)\n\nFix it by canceling the work before kfree."
}
]
} ,
"problemtype" : {
"problemtype_data" : [
{
"description" : [
{
"lang" : "eng" ,
"value" : "n/a"
}
]
}
]
} ,
"affects" : {
"vendor" : {
"vendor_data" : [
{
"vendor_name" : "Linux" ,
"product" : {
"product_data" : [
{
"product_name" : "Linux" ,
"version" : {
"version_data" : [
{
"version_affected" : "<" ,
"version_name" : "1da177e4c3f4" ,
"version_value" : "74cd0a421896"
} ,
{
"version_value" : "not down converted" ,
"x_cve_json_5_version_data" : {
"versions" : [
{
"version" : "5.4.279" ,
"lessThanOrEqual" : "5.4.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.10.221" ,
"lessThanOrEqual" : "5.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.15.162" ,
"lessThanOrEqual" : "5.15.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.1.95" ,
"lessThanOrEqual" : "6.1.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.6.35" ,
"lessThanOrEqual" : "6.6.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.9.6" ,
"lessThanOrEqual" : "6.9.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
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"version" : "6.10" ,
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"lessThanOrEqual" : "*" ,
"status" : "unaffected" ,
"versionType" : "original_commit_for_fix"
}
] ,
"defaultStatus" : "affected"
}
}
]
}
}
]
}
}
]
}
} ,
"references" : {
"reference_data" : [
{
"url" : "https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201"
} ,
{
"url" : "https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83"
} ,
{
"url" : "https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9"
} ,
{
"url" : "https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc"
} ,
{
"url" : "https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea"
} ,
{
"url" : "https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445"
} ,
{
"url" : "https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce"
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}
]
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} ,
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