CVE-2026-98686
- Source
- https://cve.org/CVERecord?id=CVE-2026-98686
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98686.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-98686
- Downstream
- Published
- 2026-10-18T15:45:55Z
- Modified
- 2026-10-19T02:47:12Z
- Summary
- smb: client: discard post-EOF pagecache when extending a file via zero range
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98686.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d
- https://git.kernel.org/stable/c/94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183
- https://git.kernel.org/stable/c/b75dadb50a25eed525264bf6fea44fad94e7626f
- https://git.kernel.org/stable/c/da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98686.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-98686
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced72c419d9b073628d3b5b0b2fc787b724f1a8c726Fixed94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183Fixedb75dadb50a25eed525264bf6fea44fad94e7626fFixed6a8279c98ad289b27c0bdb11adb3f0c0b7fd456dFixedda4fe97fb6c730d9c94a115c7bfa6f98e0d578d0