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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-2024-35895" ,
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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\nbpf, sockmap: Prevent lock inversion deadlock in map delete elem\n\nsyzkaller started using corpuses where a BPF tracing program deletes\nelements from a sockmap/sockhash map. Because BPF tracing programs can be\ninvoked from any interrupt context, locks taken during a map_delete_elem\noperation must be hardirq-safe. Otherwise a deadlock due to lock inversion\nis possible, as reported by lockdep:\n\n CPU0 CPU1\n ---- ----\n lock(&htab->buckets[i].lock);\n local_irq_disable();\n lock(&host->lock);\n lock(&htab->buckets[i].lock);\n <Interrupt>\n lock(&host->lock);\n\nLocks in sockmap are hardirq-unsafe by design. We expects elements to be\ndeleted from sockmap/sockhash only in task (normal) context with interrupts\nenabled, or in softirq context.\n\nDetect when map_delete_elem operation is invoked from a context which is\n_not_ hardirq-unsafe, that is interrupts are disabled, and bail out with an\nerror.\n\nNote that map updates are not affected by this issue. BPF verifier does not\nallow updating sockmap/sockhash from a BPF tracing program today."
}
]
} ,
"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" : "604326b41a6f" ,
"version_value" : "f7990498b05a"
} ,
{
"version_value" : "not down converted" ,
"x_cve_json_5_version_data" : {
"versions" : [
{
"version" : "4.20" ,
"status" : "affected"
} ,
{
"version" : "0" ,
"lessThan" : "4.20" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.4.274" ,
"lessThanOrEqual" : "5.4.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.10.215" ,
"lessThanOrEqual" : "5.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.15.154" ,
"lessThanOrEqual" : "5.15.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.1.85" ,
"lessThanOrEqual" : "6.1.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.6.26" ,
"lessThanOrEqual" : "6.6.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
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{
"version" : "6.6.48" ,
"lessThanOrEqual" : "6.6.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
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{
"version" : "6.8.5" ,
"lessThanOrEqual" : "6.8.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.9" ,
"lessThanOrEqual" : "*" ,
"status" : "unaffected" ,
"versionType" : "original_commit_for_fix"
}
] ,
"defaultStatus" : "affected"
}
}
]
}
}
]
}
}
]
}
} ,
"references" : {
"reference_data" : [
{
"url" : "https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/f7990498b05ac41f7d6a190dc0418ef1d21bf058"
} ,
{
"url" : "https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/dd54b48db0c822ae7b520bc80751f0a0a173ef75"
} ,
{
"url" : "https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec"
} ,
{
"url" : "https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/a44770fed86515eedb5a7c00b787f847ebb134a5"
} ,
{
"url" : "https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/668b3074aa14829e2ac2759799537a93b60fef86"
} ,
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{
"url" : "https://git.kernel.org/stable/c/913c30f827e17d8cda1da6eeb990f350d36cb69b" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/913c30f827e17d8cda1da6eeb990f350d36cb69b"
} ,
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{
"url" : "https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/6af057ccdd8e7619960aca1f0428339f213b31cd"
} ,
{
"url" : "https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/ff91059932401894e6c86341915615c5eb0eca48"
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}
]
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