{"api_version":"1","generated_at":"2026-09-20T02:46:40+00:00","cve":"CVE-2026-90266","urls":{"html":"https://cve.report/CVE-2026-90266","api":"https://cve.report/api/cve/CVE-2026-90266.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90266","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90266"},"summary":{"title":"btrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge\n\nOn a zoned FS, btrfs_delayed_refs_rsv_refill() returns -EAGAIN whenever\nthe over-committed metadata plus the zone_unusable bytes exceeds the\nusable size in a metadata block-group to avoid heavy over-commit of\nmetadata and early ENOSPC in one transaction.\n\nIf this happens while doing reclaim, the transaction is getting aborted.\n\nTreat -EAGAIN as a soft, retryable condition in case of block-group\nreclaim.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:23","updated_at":"2026-09-17 17:17:23"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/e549093c11a2fff8430df3dfbdb45eb9811a69a5","name":"https://git.kernel.org/stable/c/e549093c11a2fff8430df3dfbdb45eb9811a69a5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8249dfe46337d599e2087b772a2e32ef9f77282b","name":"https://git.kernel.org/stable/c/8249dfe46337d599e2087b772a2e32ef9f77282b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90266","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90266","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7bcb04de982ff0718870112ad9f38c35cbca528b 8249dfe46337d599e2087b772a2e32ef9f77282b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7bcb04de982ff0718870112ad9f38c35cbca528b e549093c11a2fff8430df3dfbdb45eb9811a69a5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/btrfs/block-group.c","fs/btrfs/relocation.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8249dfe46337d599e2087b772a2e32ef9f77282b","status":"affected","version":"7bcb04de982ff0718870112ad9f38c35cbca528b","versionType":"git"},{"lessThan":"e549093c11a2fff8430df3dfbdb45eb9811a69a5","status":"affected","version":"7bcb04de982ff0718870112ad9f38c35cbca528b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/btrfs/block-group.c","fs/btrfs/relocation.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.1"},{"lessThan":"7.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"7.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"7.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge\n\nOn a zoned FS, btrfs_delayed_refs_rsv_refill() returns -EAGAIN whenever\nthe over-committed metadata plus the zone_unusable bytes exceeds the\nusable size in a metadata block-group to avoid heavy over-commit of\nmetadata and early ENOSPC in one transaction.\n\nIf this happens while doing reclaim, the transaction is getting aborted.\n\nTreat -EAGAIN as a soft, retryable condition in case of block-group\nreclaim."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:08:01.995Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8249dfe46337d599e2087b772a2e32ef9f77282b"},{"url":"https://git.kernel.org/stable/c/e549093c11a2fff8430df3dfbdb45eb9811a69a5"}],"title":"btrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90266","datePublished":"2026-09-17T16:08:01.995Z","dateReserved":"2026-09-11T19:38:34.796Z","dateUpdated":"2026-09-17T16:08:01.995Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:23","lastModifiedDate":"2026-09-17 17:17:23","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90266","Ordinal":"1","Title":"btrfs: zoned: don't force read-only on transient -EAGAIN from re","CVE":"CVE-2026-90266","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90266","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge\n\nOn a zoned FS, btrfs_delayed_refs_rsv_refill() returns -EAGAIN whenever\nthe over-committed metadata plus the zone_unusable bytes exceeds the\nusable size in a metadata block-group to avoid heavy over-commit of\nmetadata and early ENOSPC in one transaction.\n\nIf this happens while doing reclaim, the transaction is getting aborted.\n\nTreat -EAGAIN as a soft, retryable condition in case of block-group\nreclaim.","Type":"Description","Title":"btrfs: zoned: don't force read-only on transient -EAGAIN from re"}]}}}