Answer in brief
CVE-2026-98446 records a Unknown severity vulnerability in xfs: don't let hidden_space go negative in xfs_metafile_resv_init. 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.
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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1df8d75030b787a9fae270b59b93eef809dd2011 <930a9c1c321efdaa3e7f8caecb0479cee3baf342 || >=1df8d75030b787a9fae270b59b93eef809dd2011 <f0d8352a39f4a2e329ae45b71bb0d49e2ca0a6dc || >=1df8d75030b787a9fae270b59b93eef809dd2011 <476582d754cdc5110f806001417fea6c77824c13 | 930a9c1c321efdaa3e7f8caecb0479cee3baf342, f0d8352a39f4a2e329ae45b71bb0d49e2ca0a6dc, 476582d754cdc5110f806001417fea6c77824c13 |
| Linux/Linuxgeneric | 6.15 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: xfs: don't let hidden_space go negative in xfs_metafile_resv_init LOLLM points out that if the amount of fdblocks that we can reserve for a metadata btree file goes below the space already used by that file, then the hidden_space subtraction can underflow, causing xfs_dec_fdblocks to subtract a huge amount of space. We never want the target to be less than the used sapce, so fix the logic that adjusts dblocks_avail downwards. Also fix an error in the adjacent comment.
Quoted source text, attributed separately from HOL analysis.