An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expanddownwards and expandupwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "4.20"
},
{
"fixed": "5.4.54"
},
{
"introduced": "5.5"
},
{
"fixed": "5.7.11"
}
],
"cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"source": "CPE_FIELD"
},
{
"extracted_events": [
{
"fixed": "5.7.11"
}
],
"source": "DESCRIPTION"
}
]
}