CVE-2026-90266 (GCVE-0-2026-90266)
Vulnerability from cvelistv5
Published
2026-09-17 16:08
Modified
2026-10-19 09:00
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
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"containers": {
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"programFiles": [
"fs/btrfs/block-group.c",
"fs/btrfs/relocation.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"versionType": "git"
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],
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"vendor": "Linux",
"versions": [
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"status": "affected",
"version": "7.1"
},
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"status": "unaffected",
"version": "0",
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"version": "7.2.6",
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"version": "7.3",
"versionType": "original_commit_for_fix"
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"versionStartIncluding": "7.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: don\u0027t 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": "2026-10-19T09:00:43.942Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/8249dfe46337d599e2087b772a2e32ef9f77282b"
},
{
"url": "https://git.kernel.org/stable/c/e549093c11a2fff8430df3dfbdb45eb9811a69a5"
}
],
"title": "btrfs: zoned: don\u0027t force read-only on transient -EAGAIN from reloc merge",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-90266",
"datePublished": "2026-09-17T16:08:01.995Z",
"dateReserved": "2026-09-11T19:38:34.796Z",
"dateUpdated": "2026-10-19T09:00:43.942Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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