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{
"data_version" : "4.0" ,
"data_type" : "CVE" ,
"data_format" : "MITRE" ,
"CVE_data_meta" : {
"ID" : "CVE-2024-36489" ,
"ASSIGNER" : "cve@kernel.org" ,
"STATE" : "PUBLIC"
} ,
"description" : {
"description_data" : [
{
"lang" : "eng" ,
"value" : "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix missing memory barrier in tls_init\n\nIn tls_init(), a write memory barrier is missing, and store-store\nreordering may cause NULL dereference in tls_{setsockopt,getsockopt}.\n\nCPU0 CPU1\n----- -----\n// In tls_init()\n// In tls_ctx_create()\nctx = kzalloc()\nctx->sk_proto = READ_ONCE(sk->sk_prot) -(1)\n\n// In update_sk_prot()\nWRITE_ONCE(sk->sk_prot, tls_prots) -(2)\n\n // In sock_common_setsockopt()\n READ_ONCE(sk->sk_prot)->setsockopt()\n\n // In tls_{setsockopt,getsockopt}()\n ctx->sk_proto->setsockopt() -(3)\n\nIn the above scenario, when (1) and (2) are reordered, (3) can observe\nthe NULL value of ctx->sk_proto, causing NULL dereference.\n\nTo fix it, we rely on rcu_assign_pointer() which implies the release\nbarrier semantic. By moving rcu_assign_pointer() after ctx->sk_proto is\ninitialized, we can ensure that ctx->sk_proto are visible when\nchanging sk->sk_prot."
}
]
} ,
"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" : "d5bee7374b68" ,
"version_value" : "d72e126e9a36"
} ,
{
"version_value" : "not down converted" ,
"x_cve_json_5_version_data" : {
"versions" : [
{
"version" : "5.7" ,
"status" : "affected"
} ,
{
"version" : "0" ,
"lessThan" : "5.7" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.10.219" ,
"lessThanOrEqual" : "5.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.15.161" ,
"lessThanOrEqual" : "5.15.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.1.93" ,
"lessThanOrEqual" : "6.1.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.6.33" ,
"lessThanOrEqual" : "6.6.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.9.4" ,
"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/d72e126e9a36d3d33889829df8fc90100bb0e071" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/d72e126e9a36d3d33889829df8fc90100bb0e071"
} ,
{
"url" : "https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b"
} ,
{
"url" : "https://git.kernel.org/stable/c/335c8f1566d8e44c384d16b450a18554896d4e8b" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/335c8f1566d8e44c384d16b450a18554896d4e8b"
} ,
{
"url" : "https://git.kernel.org/stable/c/ab67c2fd3d070a21914d0c31319d3858ab4e199c" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/ab67c2fd3d070a21914d0c31319d3858ab4e199c"
} ,
{
"url" : "https://git.kernel.org/stable/c/ef21007a7b581c7fe64d5a10c320880a033c837b" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/ef21007a7b581c7fe64d5a10c320880a033c837b"
} ,
{
"url" : "https://git.kernel.org/stable/c/91e61dd7a0af660408e87372d8330ceb218be302" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/91e61dd7a0af660408e87372d8330ceb218be302"
}
]
} ,
"generator" : {
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"engine" : "bippy-9e1c9544281a"
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