{"id":"CVE-2026-90266","title":"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 me…","summary":"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 me…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 7bcb04de982ff0718870112ad9f38c35cbca528b < 8249dfe46337d599e2087b772a2e32ef9f77282b","Linux >= 7bcb04de982ff0718870112ad9f38c35cbca528b < e549093c11a2fff8430df3dfbdb45eb9811a69a5","Linux 7.1"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:23.147","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90266","references":[{"url":"https://git.kernel.org/stable/c/8249dfe46337d599e2087b772a2e32ef9f77282b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e549093c11a2fff8430df3dfbdb45eb9811a69a5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.839Z","epss":0.00189,"epssPercentile":0.08811,"slug":"CVE-2026-90266","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}