{"id":"CVE-2026-98506","state":"PUBLISHED","title":"mm/hugetlb: do not dissolve gigantic pages without runtime support","description":"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.","publishedAt":"2026-10-18T15:17:12.898Z","updatedAt":"2026-10-19T09:20:45.266Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"ddc1055b557506a6ea8930dfbd8d1555d6a3f01e","versionType":"git"},{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"ccf96a4b8626a001c13c5836d8357f31c57bbd8e","versionType":"git"},{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"443628f755b35bf45044f68b970b65cd531c42fd","versionType":"git"},{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"a363c62a653cc8b3e21da9545fa4e028ef50f9c3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]}],"references":["https://git.kernel.org/stable/c/ddc1055b557506a6ea8930dfbd8d1555d6a3f01e","https://git.kernel.org/stable/c/ccf96a4b8626a001c13c5836d8357f31c57bbd8e","https://git.kernel.org/stable/c/443628f755b35bf45044f68b970b65cd531c42fd","https://git.kernel.org/stable/c/a363c62a653cc8b3e21da9545fa4e028ef50f9c3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98506.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98506","state":"PUBLISHED","datePublished":"2026-10-18T15:17:12.898Z","dateUpdated":"2026-10-19T09:20:45.266Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.353Z"},"containers":{"cna":{"title":"mm/hugetlb: do not dissolve gigantic pages without runtime support","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"ddc1055b557506a6ea8930dfbd8d1555d6a3f01e","versionType":"git"},{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"ccf96a4b8626a001c13c5836d8357f31c57bbd8e","versionType":"git"},{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"443628f755b35bf45044f68b970b65cd531c42fd","versionType":"git"},{"version":"6eb4e88a6d27022ea8aff424d47a0a5dfc9fcb34","status":"affected","lessThan":"a363c62a653cc8b3e21da9545fa4e028ef50f9c3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:20:45.266Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}