Riskcovery

CVE-2026-90266

btrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge

State
Published
Severity
Not scored
Published
Sep 17, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

btrfs: zoned: don't force read-only on transient -EAGAIN from reloc merge

On a zoned FS, btrfs_delayed_refs_rsv_refill() returns -EAGAIN whenever the over-committed metadata plus the zone_unusable bytes exceeds the usable size in a metadata block-group to avoid heavy over-commit of metadata and early ENOSPC in one transaction.

If this happens while doing reclaim, the transaction is getting aborted.

Treat -EAGAIN as a soft, retryable condition in case of block-group reclaim.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 7bcb04de982ff0718870112ad9f38c35cbca528b to before 8249dfe46337d599e2087b772a2e32ef9f77282bAffected
  • 7bcb04de982ff0718870112ad9f38c35cbca528b to before e549093c11a2fff8430df3dfbdb45eb9811a69a5Affected
LinuxLinux
  • 7.1Affected
  • before 7.1Not affected
  • 7.2.6 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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