An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/hugememory.c. The getuser_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.7.3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.0"
}
]
}
]
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-29374.json"