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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-2024-49976" ,
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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\ntracing/timerlat: Drop interface_lock in stop_kthread()\n\nstop_kthread() is the offline callback for \"trace/osnoise:online\", since\ncommit 5bfbcd1ee57b (\"tracing/timerlat: Add interface_lock around clearing\nof kthread in stop_kthread()\"), the following ABBA deadlock scenario is\nintroduced:\n\nT1 | T2 [BP] | T3 [AP]\nosnoise_hotplug_workfn() | work_for_cpu_fn() | cpuhp_thread_fun()\n | _cpu_down() | osnoise_cpu_die()\n mutex_lock(&interface_lock) | | stop_kthread()\n | cpus_write_lock() | mutex_lock(&interface_lock)\n cpus_read_lock() | cpuhp_kick_ap() |\n\nAs the interface_lock here in just for protecting the \"kthread\" field of\nthe osn_var, use xchg() instead to fix this issue. Also use\nfor_each_online_cpu() back in stop_per_cpu_kthreads() as it can take\ncpu_read_lock() again."
}
]
} ,
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"description" : [
{
"lang" : "eng" ,
"value" : "n/a"
}
]
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}
]
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} ,
"affects" : {
"vendor" : {
"vendor_data" : [
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"vendor_name" : "Linux" ,
"product" : {
"product_data" : [
{
"product_name" : "Linux" ,
"version" : {
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"version_affected" : "<" ,
"version_name" : "b4fdabffae14" ,
"version_value" : "a4a05ceffe8f"
} ,
{
"version_affected" : "<" ,
"version_name" : "4679272d5252" ,
"version_value" : "09cb44cc3d3d"
} ,
{
"version_affected" : "<" ,
"version_name" : "5bfbcd1ee57b" ,
"version_value" : "db8571a9a098"
} ,
{
"version_value" : "not down converted" ,
"x_cve_json_5_version_data" : {
"versions" : [
{
"version" : "6.11" ,
"status" : "affected"
} ,
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"version" : "0" ,
"lessThan" : "6.11" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.6.55" ,
"lessThanOrEqual" : "6.6.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.10.14" ,
"lessThanOrEqual" : "6.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.11.3" ,
"lessThanOrEqual" : "6.11.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.12-rc2" ,
"lessThanOrEqual" : "*" ,
"status" : "unaffected" ,
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"references" : {
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"url" : "https://git.kernel.org/stable/c/a4a05ceffe8fad68b45de38fe2311bda619e76e2" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/a4a05ceffe8fad68b45de38fe2311bda619e76e2"
} ,
{
"url" : "https://git.kernel.org/stable/c/09cb44cc3d3df7ade2cebc939d6257a2fa8afc7a" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/09cb44cc3d3df7ade2cebc939d6257a2fa8afc7a"
} ,
{
"url" : "https://git.kernel.org/stable/c/db8571a9a098086608c11a15856ff585789e67e8" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/db8571a9a098086608c11a15856ff585789e67e8"
} ,
{
"url" : "https://git.kernel.org/stable/c/b484a02c9cedf8703eff8f0756f94618004bd165" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/b484a02c9cedf8703eff8f0756f94618004bd165"
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