Answer in brief
CVE-2026-98686 records a Unknown severity vulnerability in smb: client: discard post-EOF pagecache when extending a file via zero range. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183 || >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <b75dadb50a25eed525264bf6fea44fad94e7626f || >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d || >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0 | 94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183, b75dadb50a25eed525264bf6fea44fad94e7626f, 6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d, da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0 |
| Linux/Linuxgeneric | 5.1 | Not reported |
| Linux/Linuxgeneric | >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <3df27277f8f95345d4a6c57367824bf1aefdbf66 || >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183 || >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <b75dadb50a25eed525264bf6fea44fad94e7626f || >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d || >=72c419d9b073628d3b5b0b2fc787b724f1a8c726 <da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0 | 3df27277f8f95345d4a6c57367824bf1aefdbf66, 94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183, b75dadb50a25eed525264bf6fea44fad94e7626f, 6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d, da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0 |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 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 zero range smb3_zero_range() removed the pagecache only for the range being zeroed, so when it 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. Lower the discard boundary to the smaller of the zero-range offset and the old EOF.
Quoted source text, attributed separately from HOL analysis.