Bug 2559299 (CVE-2026-115375)

Summary: CVE-2026-115375 github.com/lxc/incus: Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 Path Traversal via Instance Backup Dependent Volumes
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Incus. An authenticated user with instance creation privileges can exploit a path traversal vulnerability by importing a crafted instance backup archive containing directory traversal sequences in dependent volume names. Successful exploitation allows the attacker to escape container boundaries and write arbitrary files to the host filesystem with root privileges, leading to full host compromise.
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Bug Depends On: 2565776    
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Description OSIDB Bzimport 2026-10-22 20:20:24 UTC
Incus 7.0.0 before 7.0.2 and 7.1.0 before 7.5.0 contains a path traversal vulnerability that allows clients able to create instances to write files on the host. The flaw stems from unvalidated dependent custom volume names in instance backup index.yaml files. Attackers can import a crafted instance backup with ../ sequences in dependent volume names to create root-owned directories with controlled content, leading to full host compromise.