{"api_version":"1","generated_at":"2026-10-07T06:18:58+00:00","cve":"CVE-2026-98245","urls":{"html":"https://cve.report/CVE-2026-98245","api":"https://cve.report/api/cve/CVE-2026-98245.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98245","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98245"},"summary":{"title":"btrfs: take commit root semaphore when iterating in mark_block_group_to_copy()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: take commit root semaphore when iterating in mark_block_group_to_copy()\n\nmark_block_group_to_copy() iterates over the commit root with\nskip_locking=true. A concurrent transaction commit can swap and free\nthe commit root during iteration, causing use-after-free when\naccessing extent buffers.\n\nFix it by using path->need_commit_sem to protect the commit root search.","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/8e2007b263ea250251ec3021a0a197da990ee1a8","name":"https://git.kernel.org/stable/c/8e2007b263ea250251ec3021a0a197da990ee1a8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c32490c6d3f3a9f2d177d57c7eb8bbc347561d08","name":"https://git.kernel.org/stable/c/c32490c6d3f3a9f2d177d57c7eb8bbc347561d08","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/709f6a5e986535005110c6c69b322f63631cb200","name":"https://git.kernel.org/stable/c/709f6a5e986535005110c6c69b322f63631cb200","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0594e3423f4ba3137c734371169491f9a98e9af4","name":"https://git.kernel.org/stable/c/0594e3423f4ba3137c734371169491f9a98e9af4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98245","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98245","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 78ce9fc269af6e69c1399ab910ba6bc81c934f67 8e2007b263ea250251ec3021a0a197da990ee1a8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 78ce9fc269af6e69c1399ab910ba6bc81c934f67 709f6a5e986535005110c6c69b322f63631cb200 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 78ce9fc269af6e69c1399ab910ba6bc81c934f67 c32490c6d3f3a9f2d177d57c7eb8bbc347561d08 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 78ce9fc269af6e69c1399ab910ba6bc81c934f67 0594e3423f4ba3137c734371169491f9a98e9af4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.112 6.12.* 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":"98245","cve":"CVE-2026-98245","epss":"0.002090000","percentile":"0.100670000","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/dev-replace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8e2007b263ea250251ec3021a0a197da990ee1a8","status":"affected","version":"78ce9fc269af6e69c1399ab910ba6bc81c934f67","versionType":"git"},{"lessThan":"709f6a5e986535005110c6c69b322f63631cb200","status":"affected","version":"78ce9fc269af6e69c1399ab910ba6bc81c934f67","versionType":"git"},{"lessThan":"c32490c6d3f3a9f2d177d57c7eb8bbc347561d08","status":"affected","version":"78ce9fc269af6e69c1399ab910ba6bc81c934f67","versionType":"git"},{"lessThan":"0594e3423f4ba3137c734371169491f9a98e9af4","status":"affected","version":"78ce9fc269af6e69c1399ab910ba6bc81c934f67","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/btrfs/dev-replace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.12"},{"lessThan":"5.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.112","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.54","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":"6.12.112","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"5.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: take commit root semaphore when iterating in mark_block_group_to_copy()\n\nmark_block_group_to_copy() iterates over the commit root with\nskip_locking=true. A concurrent transaction commit can swap and free\nthe commit root during iteration, causing use-after-free when\naccessing extent buffers.\n\nFix it by using path->need_commit_sem to protect the commit root search."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:45:14.758Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8e2007b263ea250251ec3021a0a197da990ee1a8"},{"url":"https://git.kernel.org/stable/c/709f6a5e986535005110c6c69b322f63631cb200"},{"url":"https://git.kernel.org/stable/c/c32490c6d3f3a9f2d177d57c7eb8bbc347561d08"},{"url":"https://git.kernel.org/stable/c/0594e3423f4ba3137c734371169491f9a98e9af4"}],"title":"btrfs: take commit root semaphore when iterating in mark_block_group_to_copy()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98245","datePublished":"2026-10-06T08:45:14.758Z","dateReserved":"2026-09-25T10:25:14.330Z","dateUpdated":"2026-10-06T08:45:14.758Z","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":"98245","Ordinal":"1","Title":"btrfs: take commit root semaphore when iterating in mark_block_g","CVE":"CVE-2026-98245","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98245","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: take commit root semaphore when iterating in mark_block_group_to_copy()\n\nmark_block_group_to_copy() iterates over the commit root with\nskip_locking=true. A concurrent transaction commit can swap and free\nthe commit root during iteration, causing use-after-free when\naccessing extent buffers.\n\nFix it by using path->need_commit_sem to protect the commit root search.","Type":"Description","Title":"btrfs: take commit root semaphore when iterating in mark_block_g"}]}}}