{"api_version":"1","generated_at":"2026-10-15T14:27:40+00:00","cve":"CVE-2026-98244","urls":{"html":"https://cve.report/CVE-2026-98244","api":"https://cve.report/api/cve/CVE-2026-98244.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98244","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98244"},"summary":{"title":"btrfs: clear free space tree creation state on rebuild failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: clear free space tree creation state on rebuild failure\n\nbtrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE\nbefore rebuilding the free space tree.  Several error paths return\nwithout clearing this flag.\n\nThe transaction restart failure path can leave the flag set on a live\nfilesystem, causing delayed reference processing to be skipped. Clear it\non all free space tree rebuild failure paths. Keep\nBTRFS_FS_FREE_SPACE_TREE_UNTRUSTED set, since a failed rebuild leaves\nthe free space tree untrusted. Callers must fall back to extent-tree\ncaching.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-06 09:18:12","updated_at":"2026-10-06 09:18:12"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81","name":"https://git.kernel.org/stable/c/b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3565893cc72cdf6b795cf6a33e7ff9605322334d","name":"https://git.kernel.org/stable/c/3565893cc72cdf6b795cf6a33e7ff9605322334d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a32bedab8ece9d1f90a1476a5b486a1804dc78ba","name":"https://git.kernel.org/stable/c/a32bedab8ece9d1f90a1476a5b486a1804dc78ba","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98244","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98244","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 882af9f13e830c0a4ef696bb72cd5998a5067a93 a32bedab8ece9d1f90a1476a5b486a1804dc78ba git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 882af9f13e830c0a4ef696bb72cd5998a5067a93 b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 882af9f13e830c0a4ef696bb72cd5998a5067a93 3565893cc72cdf6b795cf6a33e7ff9605322334d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.54 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.8 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98244","cve":"CVE-2026-98244","epss":"0.002060000","percentile":"0.097590000","score_date":"2026-10-06","updated_at":"2026-10-07 00:14:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/btrfs/free-space-tree.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a32bedab8ece9d1f90a1476a5b486a1804dc78ba","status":"affected","version":"882af9f13e830c0a4ef696bb72cd5998a5067a93","versionType":"git"},{"lessThan":"b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81","status":"affected","version":"882af9f13e830c0a4ef696bb72cd5998a5067a93","versionType":"git"},{"lessThan":"3565893cc72cdf6b795cf6a33e7ff9605322334d","status":"affected","version":"882af9f13e830c0a4ef696bb72cd5998a5067a93","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/btrfs/free-space-tree.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.54","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"6.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: clear free space tree creation state on rebuild failure\n\nbtrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE\nbefore rebuilding the free space tree.  Several error paths return\nwithout clearing this flag.\n\nThe transaction restart failure path can leave the flag set on a live\nfilesystem, causing delayed reference processing to be skipped. Clear it\non all free space tree rebuild failure paths. Keep\nBTRFS_FS_FREE_SPACE_TREE_UNTRUSTED set, since a failed rebuild leaves\nthe free space tree untrusted. Callers must fall back to extent-tree\ncaching."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:45:14.120Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a32bedab8ece9d1f90a1476a5b486a1804dc78ba"},{"url":"https://git.kernel.org/stable/c/b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81"},{"url":"https://git.kernel.org/stable/c/3565893cc72cdf6b795cf6a33e7ff9605322334d"}],"title":"btrfs: clear free space tree creation state on rebuild failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98244","datePublished":"2026-10-06T08:45:14.120Z","dateReserved":"2026-09-25T10:25:14.330Z","dateUpdated":"2026-10-06T08:45:14.120Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 09:18:12","lastModifiedDate":"2026-10-06 09:18:12","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98244","Ordinal":"1","Title":"btrfs: clear free space tree creation state on rebuild failure","CVE":"CVE-2026-98244","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98244","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: clear free space tree creation state on rebuild failure\n\nbtrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE\nbefore rebuilding the free space tree.  Several error paths return\nwithout clearing this flag.\n\nThe transaction restart failure path can leave the flag set on a live\nfilesystem, causing delayed reference processing to be skipped. Clear it\non all free space tree rebuild failure paths. Keep\nBTRFS_FS_FREE_SPACE_TREE_UNTRUSTED set, since a failed rebuild leaves\nthe free space tree untrusted. Callers must fall back to extent-tree\ncaching.","Type":"Description","Title":"btrfs: clear free space tree creation state on rebuild failure"}]}}}