f2fs: fix to avoid potential deadloop in f2fs_fsync_node_pages() (CVE-2026-89833) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89833

f2fs: fix to avoid potential deadloop in f2fs_fsync_node_pages()

Answer in brief

CVE-2026-89833 records a Unknown severity vulnerability in f2fs: fix to avoid potential deadloop in f2fs_fsync_node_pages(). 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 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 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	>=608514deba38c8611ad330d6a3c8e2b9a1f68e4b <161513f53e4ac90fd356433bdf8e31e6adeb92af \|\| >=608514deba38c8611ad330d6a3c8e2b9a1f68e4b <905411f6504876d268ba8dafc8e75367782da4b7 \|\| >=608514deba38c8611ad330d6a3c8e2b9a1f68e4b <ce366bfa821ec81dd45bde547ee31e659306cc61	161513f53e4ac90fd356433bdf8e31e6adeb92af, 905411f6504876d268ba8dafc8e75367782da4b7, ce366bfa821ec81dd45bde547ee31e659306cc61
Linux/Linuxgeneric	4.7	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 161513f53e4ac90fd356433bdf8e31e6adeb92af if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid potential deadloop in f2fs_fsync_node_pages() There is potential deadloop in race condition: Thread A Thread B - fsync - f2fs_do_sync_file - f2fs_fsync_node_pages - last_fsync_dnode - folio_get(last_folio) - f2fs_setattr - f2fs_truncate - f2fs_truncate_blocks - f2fs_do_truncate_blocks - f2fs_truncate_inode_blocks - truncate_dnode - truncate_node - invalidate_mapping_pages - folio->mapping = NULL - is_node_folio alwasy return false - atomic && !marked is always true, then goto retry

Quoted source text, attributed separately from HOL analysis.