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{
"CVE_data_meta" : {
"ASSIGNER" : "cve@mitre.org" ,
"ID" : "CVE-2018-18281" ,
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"STATE" : "PUBLIC"
} ,
"affects" : {
"vendor" : {
"vendor_data" : [
{
"product" : {
"product_data" : [
{
"product_name" : "n/a" ,
"version" : {
"version_data" : [
{
"version_value" : "n/a"
}
]
}
}
]
} ,
"vendor_name" : "n/a"
}
]
}
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} ,
"data_format" : "MITRE" ,
"data_type" : "CVE" ,
"data_version" : "4.0" ,
"description" : {
"description_data" : [
{
"lang" : "eng" ,
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"value" : "Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19."
}
]
} ,
"problemtype" : {
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{
"description" : [
{
"lang" : "eng" ,
"value" : "n/a"
}
]
}
]
} ,
"references" : {
"reference_data" : [
{
"name" : "[oss-security] 20181029 Linux kernel: TLB flush happens too late on mremap (CVE-2018-18281; fixed in 4.9.135, 4.14.78, 4.18.16, 4.19)" ,
"refsource" : "MLIST" ,
"url" : "http://www.openwall.com/lists/oss-security/2018/10/29/5"
} ,
{
"name" : "http://packetstormsecurity.com/files/150001/Linux-mremap-TLB-Flush-Too-Late.html" ,
"refsource" : "MISC" ,
"url" : "http://packetstormsecurity.com/files/150001/Linux-mremap-TLB-Flush-Too-Late.html"
} ,
{
"name" : "https://bugs.chromium.org/p/project-zero/issues/detail?id=1695" ,
"refsource" : "MISC" ,
"url" : "https://bugs.chromium.org/p/project-zero/issues/detail?id=1695"
} ,
{
"name" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.78" ,
"refsource" : "CONFIRM" ,
"url" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.78"
} ,
{
"name" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.16" ,
"refsource" : "CONFIRM" ,
"url" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.16"
} ,
{
"name" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135" ,
"refsource" : "CONFIRM" ,
"url" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135"
} ,
{
"name" : "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb66ae030829605d61fbef1909ce310e29f78821" ,
"refsource" : "CONFIRM" ,
"url" : "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb66ae030829605d61fbef1909ce310e29f78821"
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} ,
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{
"name" : "USN-3832-1" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3832-1/"
} ,
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{
"name" : "USN-3835-1" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3835-1/"
} ,
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{
"name" : "USN-3871-1" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3871-1/"
} ,
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{
"name" : "USN-3871-3" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3871-3/"
} ,
{
"name" : "USN-3871-4" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3871-4/"
} ,
{
"name" : "USN-3880-2" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3880-2/"
} ,
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{
"name" : "USN-3871-5" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3871-5/"
} ,
{
"name" : "USN-3880-1" ,
"refsource" : "UBUNTU" ,
"url" : "https://usn.ubuntu.com/3880-1/"
} ,
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{
"name" : "105761" ,
"refsource" : "BID" ,
"url" : "http://www.securityfocus.com/bid/105761"
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} ,
{
"name" : "106503" ,
"refsource" : "BID" ,
"url" : "http://www.securityfocus.com/bid/106503"
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}
]
}
}
