CVE-2026-98506

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98506", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.353Z", "datePublished": "2026-10-18T15:17:12.898Z", "dateUpdated": "2026-10-19T09:20:45.266Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:20:45.266Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb: do not dissolve gigantic pages without runtime support\n\ndissolve_free_hugetlb_folio() doesn't check\nhstate_is_gigantic_no_runtime(h) though remove_hugetlb_folio()/\nupdate_and_free_hugetlb_folio() silently bail for such folios, so it frees\na still-listed folio and, on vmemmap restore failure, the\nadd_hugetlb_folio() rollback corrupts the free list."}], "affected": [{"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": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "lessThan": "ddc1055b557506a6ea8930dfbd8d1555d6a3f01e", "status": "affected", "versionType": "git"}, {"version": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "lessThan": "ccf96a4b8626a001c13c5836d8357f31c57bbd8e", "status": "affected", "versionType": "git"}, {"version": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "lessThan": "443628f755b35bf45044f68b970b65cd531c42fd", "status": "affected", "versionType": "git"}, {"version": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "lessThan": "a363c62a653cc8b3e21da9545fa4e028ef50f9c3", "status": "affected", "versionType": "git"}]}, {"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": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ddc1055b557506a6ea8930dfbd8d1555d6a3f01e"}, {"url": "https://git.kernel.org/stable/c/ccf96a4b8626a001c13c5836d8357f31c57bbd8e"}, {"url": "https://git.kernel.org/stable/c/443628f755b35bf45044f68b970b65cd531c42fd"}, {"url": "https://git.kernel.org/stable/c/a363c62a653cc8b3e21da9545fa4e028ef50f9c3"}], "title": "mm/hugetlb: do not dissolve gigantic pages without runtime support", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/hugetlb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ddc1055b557506a6ea8930dfbd8d1555d6a3f01e", "status": "affected", "version": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "versionType": "git"}, {"lessThan": "ccf96a4b8626a001c13c5836d8357f31c57bbd8e", "status": "affected", "version": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "versionType": "git"}, {"lessThan": "443628f755b35bf45044f68b970b65cd531c42fd", "status": "affected", "version": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "versionType": "git"}, {"lessThan": "a363c62a653cc8b3e21da9545fa4e028ef50f9c3", "status": "affected", "version": "6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["mm/hugetlb.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb: do not dissolve gigantic pages without runtime support\n\ndissolve_free_hugetlb_folio() doesn't check\nhstate_is_gigantic_no_runtime(h) though remove_hugetlb_folio()/\nupdate_and_free_hugetlb_folio() silently bail for such folios, so it frees\na still-listed folio and, on vmemmap restore failure, the\nadd_hugetlb_folio() rollback corrupts the free list."}], "id": "CVE-2026-98506", "lastModified": "2026-10-19T10:19:03.887", "metrics": {}, "published": "2026-10-18T16:17:01.717", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/443628f755b35bf45044f68b970b65cd531c42fd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a363c62a653cc8b3e21da9545fa4e028ef50f9c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ccf96a4b8626a001c13c5836d8357f31c57bbd8e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ddc1055b557506a6ea8930dfbd8d1555d6a3f01e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: mm/hugetlb: do not dissolve gigantic pages without runtime support", "id": "2554842", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554842"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-826", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm/hugetlb: do not dissolve gigantic pages without runtime support\ndissolve_free_hugetlb_folio() doesn't check\nhstate_is_gigantic_no_runtime(h) though remove_hugetlb_folio()/\nupdate_and_free_hugetlb_folio() silently bail for such folios, so it frees\na still-listed folio and, on vmemmap restore failure, the\nadd_hugetlb_folio() rollback corrupts the free list.", "A flaw was found in the Linux kernel's HugeTLB (Huge Translation Lookaside Buffer) subsystem. This flaw allows a local user to cause a Denial of Service (DoS) by triggering the dissolution of gigantic memory pages that lack runtime support. Because the kernel fails to verify runtime support before freeing these pages, a failure during memory restoration corrupts the HugeTLB free list and crashes the system."], "name": "CVE-2026-98506", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98506\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98506\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98506.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34,ddc1055b557506a6ea8930dfbd8d1555d6a3f01e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34,ccf96a4b8626a001c13c5836d8357f31c57bbd8e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34,443628f755b35bf45044f68b970b65cd531c42fd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34,a363c62a653cc8b3e21da9545fa4e028ef50f9c3)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-18T17:00:09.233164+00:00", "updated": "2026-10-20T21:00:18.199202+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}