smb: client: discard post-EOF pagecache when extending a file via zero range
Summary
| CVE | CVE-2026-98686 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-18 16:17:21 UTC |
| Updated | 2026-10-30 13:21:18 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001720000 probability, percentile 0.066110000 (date 2026-11-01)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 1ecf89d8efca618e0c758c06b9a1fdde8bd941da git | Not specified |
| CNA | Linux | Linux | affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 03408d15c5405f8dc3e1a114cdce2174027a85f6 git | Not specified |
| CNA | Linux | Linux | affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 3df27277f8f95345d4a6c57367824bf1aefdbf66 git | Not specified |
| CNA | Linux | Linux | affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183 git | Not specified |
| CNA | Linux | Linux | affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 b75dadb50a25eed525264bf6fea44fad94e7626f git | Not specified |
| CNA | Linux | Linux | affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d git | Not specified |
| CNA | Linux | Linux | affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0 git | Not specified |
| CNA | Linux | Linux | affected 5.1 | Not specified |
| CNA | Linux | Linux | unaffected 5.1 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.224 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.191 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.160 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.113 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.56 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.10 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1ecf89d8efca618e0c758c06b9a1fdde8bd941da | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/b75dadb50a25eed525264bf6fea44fad94e7626f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3df27277f8f95345d4a6c57367824bf1aefdbf66 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/03408d15c5405f8dc3e1a114cdce2174027a85f6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.