AZL-95225
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-95225.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-95225
- Upstream
- Published
- 2026-08-10T12:17:20Z
- Modified
- 2026-08-30T05:26:50Z
- Summary
- CVE-2026-68083 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix path resolution in ksmbdvfskernpathcreate
The SMB2 open lookup is rooted at the share with LOOKUPBENEATH, but the create/mkdir/hardlink sink is not: ksmbdvfskernpathcreate() builds an absolute path with converttounixname() and resolves it from ATFDCWD via startcreating_path(), so a ".." component is walked from the real filesystem root and escapes the export.
An authenticated client races a missing path component so the rooted open lookup returns -ENOENT (taking the create branch) while the same component is present (a directory) when the create walk runs; the create then resolves ".." out of the share.
Root the create walk at the share like the lookup and rename paths already are: resolve the parent with vfspathparentlookup(..., LOOKUPBENEATH, &shareconf->vfspath) and create the final component with startcreatingnoperm(). converttounix_name() then has no callers and is removed.
- References