CVE-2026-89593Published

hugetlb: only adjust reservation during unmapping if mapcount is 0

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-89593

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/hugetlb.c"
                    ],
                    "versions": [
                        {
                            "version": "df7a6d1f64056aec572162c5d35ed9ff86ece6f3",
                            "lessThan": "b0b1b9ca80b795ed2223e76dd787db7067121fb9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "df7a6d1f64056aec572162c5d35ed9ff86ece6f3",
                            "lessThan": "a3c65af20cceb7f997847727636b4017326f845d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "df7a6d1f64056aec572162c5d35ed9ff86ece6f3",
                            "lessThan": "0f001491e5a2ec69aa9d5dd6b799e5742245f9ea",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "df7a6d1f64056aec572162c5d35ed9ff86ece6f3",
                            "lessThan": "5120b1e048d48596ffaec1a8412012a91adba73b",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/hugetlb.c"
                    ],
                    "versions": [
                        {
                            "version": "6.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON