btrfs: detach failed sprout device from transaction update list (CVE-2026-98091) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98091

btrfs: detach failed sprout device from transaction update list

Answer in brief

CVE-2026-98091 records a Unknown severity vulnerability in btrfs: detach failed sprout device from transaction update list. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=bbbf7243d62d8be73b7ef60721c127b36b2d523e <e9e7e37afa85db770e6084360b21a21a8b3a583f \|\| >=bbbf7243d62d8be73b7ef60721c127b36b2d523e <8b001df2b37ca022f710f3254fbb0bcd6d9e1bed \|\| >=bbbf7243d62d8be73b7ef60721c127b36b2d523e <0ea6814bc0ff7cff443241bd34db9f0f828f3190 \|\| >=bbbf7243d62d8be73b7ef60721c127b36b2d523e <c93b3c43df561cd9f592cee20ae058b563f9e5b6	e9e7e37afa85db770e6084360b21a21a8b3a583f, 8b001df2b37ca022f710f3254fbb0bcd6d9e1bed, 0ea6814bc0ff7cff443241bd34db9f0f828f3190, c93b3c43df561cd9f592cee20ae058b563f9e5b6
Linux/Linuxgeneric	5.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to e9e7e37afa85db770e6084360b21a21a8b3a583f if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: btrfs: detach failed sprout device from transaction update list When creating the first metadata chunk for a sprout filesystem, create_chunk() adds the new device to the transaction dev_update_list through device->post_commit_list. If the subsequent system chunk creation fails, btrfs_init_new_device() aborts the transaction and releases the device while post_commit_list is still linked. This triggers a warning in btrfs_free_device() and leaves the transaction list referencing freed memory. Detach the device while holding chunk_mutex before releasing it.

Quoted source text, attributed separately from HOL analysis.