Answer in brief
CVE-2026-98685 records a Unknown severity vulnerability in smb: client: discard post-EOF pagecache when extending a file via clone range. 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 | >=c54fc3a4f375663f2361a9cbb2955fb4ef912879 <15bb9f1d3e967e328649e92a1451e60a0dc66118 || >=c54fc3a4f375663f2361a9cbb2955fb4ef912879 <4721587f96cb8de8164f3fd203093a0875560999 || 358bd5f436d820bb758833050aae065b35d6986c || 43801359c8971cc49b4a4db5015fba77fbd09c32 || >=6.1.68 <6.2 || >=6.6.7 <6.7 | 15bb9f1d3e967e328649e92a1451e60a0dc66118, 4721587f96cb8de8164f3fd203093a0875560999, 6.2, 6.7 |
| Linux/Linuxgeneric | 6.7 | 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: smb: client: discard post-EOF pagecache when extending a file via clone range cifs_remap_file_range() discarded the pagecache only for the folios overlapping the destination region, so when a clone extends the file the folio straddling the old EOF - which may hold data dirtied past EOF through an mmap - was never dropped and became visible as file content once the file was extended. Start the discard at the smaller of fstart and the old EOF. i_size is still old here, so nothing past the old EOF is flushed to the server.
Quoted source text, attributed separately from HOL analysis.