GHSA-VXGX-5RHH-G7HJ
Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31In the Linux kernel, the following vulnerability has been resolved:
btrfs: zoned: finish active block group cleanup if call_zone_finish() fails
do_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE before finishing the zones. If call_zone_finish() then fails it returned early, leaving the now inactive block group on fs_info->zone_active_bgs, leaking its reference, the BTRFS_FS_NEED_ZONE_FINISH waiters are never woken, and as its alloc_offset equals the zone capacity btrfs_zone_finish_one_bg() keeps selecting it, spinning btrfs_zoned_activate_one_bg().
Fall through to the cleanup on failure too and return the error, but keep the block group read-only as its zones are left inconsistent.
{
"affected": [],
"aliases": [
"CVE-2026-98081"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-25T11:17:37Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: finish active block group cleanup if call_zone_finish() fails\n\ndo_zone_finish() clears BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE before finishing\nthe zones. If call_zone_finish() then fails it returned early, leaving the\nnow inactive block group on fs_info-\u003ezone_active_bgs, leaking its\nreference, the BTRFS_FS_NEED_ZONE_FINISH waiters are never woken, and as\nits alloc_offset equals the zone capacity btrfs_zone_finish_one_bg() keeps\nselecting it, spinning btrfs_zoned_activate_one_bg().\n\nFall through to the cleanup on failure too and return the error, but keep\nthe block group read-only as its zones are left inconsistent.",
"id": "GHSA-vxgx-5rhh-g7hj",
"modified": "2026-09-25T12:31:36Z",
"published": "2026-09-25T12:31:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98081"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/36b9cdab44848f25879ca625275c92b007f84653"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/40370f02a1ca3760f8925ffcbe76eb4d91ea758d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a18a6b93a2843b9d103d3456bbd4b3f90282a379"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e1b168a53174b385e3548bfbd079513b22ac240c"
}
],
"schema_version": "1.4.0",
"severity": []
}
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