CVE-2018-18281

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Source
https://cve.org/CVERecord?id=CVE-2018-18281
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18281.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2018-18281
Downstream
Related
Published
2018-10-30T18:29:00.737Z
Modified
2026-03-15T22:19:34.040575Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git /

Affected ranges

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "3.2"
            },
            {
                "fixed": "4.9.135"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "4.9.136"
            },
            {
                "fixed": "4.14.78"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "4.14.79"
            },
            {
                "fixed": "4.18.16"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "4.18.17"
            },
            {
                "fixed": "4.19"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "12.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "14.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "16.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "18.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "18.10"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.0"
            }
        ]
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18281.json"