CVE-2026-98279 (GCVE-0-2026-98279)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-06 08:45
VLAI
Title
btrfs: handle lack of space when cleaning up verity items
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: handle lack of space when cleaning up verity items When enable_verity() hits the qgroup limit, rollback_verity() needs its own metadata reservation. When the qgroup limit or lack of space refuses the rollback, the whole filesystem is forced read-only even though the qgroup limit was for one subvolume only. Also orphan cleanup at the next mount fails the same way, so the leftover items are never removed: with -EDQUOT the subvolume stays unreachable, and with -ENOSPC on a full filesystem the next read-write mount fails. Start transactions with btrfs_start_transaction_fallback_global_rsv() in btrfs_orphan_cleanup(), drop_verity_items() and rollback_verity(). Those calls only delete items and free the space in the end, so they may use the global reserve and skip the qgroup limit, which avoids -ENOSPC and -EDQUOT.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6633 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 146054090b0859b28fc39015c7704ccc3c3a347f , < 4b7ecabd87dc40998fe7870d7975279649229a3b (git)
Affected: 146054090b0859b28fc39015c7704ccc3c3a347f , < efa5780b84f066f419a667f6b9542368b2f62074 (git)
Affected: 146054090b0859b28fc39015c7704ccc3c3a347f , < 76bf149cd0298544631e756670b89c399c7acbca (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: handle lack of space when cleaning up verity items\n\nWhen enable_verity() hits the qgroup limit, rollback_verity() needs its\nown metadata reservation. When the qgroup limit or lack of space refuses\nthe rollback, the whole filesystem is forced read-only even though the\nqgroup limit was for one subvolume only. Also orphan cleanup at the next\nmount fails the same way, so the leftover items are never removed: with\n-EDQUOT the subvolume stays unreachable, and with -ENOSPC on a full\nfilesystem the next read-write mount fails.\n\nStart transactions with btrfs_start_transaction_fallback_global_rsv() in\nbtrfs_orphan_cleanup(), drop_verity_items() and rollback_verity(). Those\ncalls only delete items and free the space in the end, so they may use\nthe global reserve and skip the qgroup limit, which avoids -ENOSPC and\n-EDQUOT."
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    "datePublished": "2026-10-06T08:45:39.114Z",
    "dateReserved": "2026-09-25T10:25:14.334Z",
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          }
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        "metrics": {},
        "published": "2026-10-06T09:18:17.783",
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      "title": "SUSE CVE CVE-2026-98279",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98279.json",
      "version": "2"
    }
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}



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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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