CVE-2026-115377

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{"bugzilla": {"description": "incus: Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Symlink in Migration Stream", "id": "2559251", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559251"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-59", "details": ["Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.", "A flaw was found in Incus. An attacker controlling a malicious migration source can exploit an arbitrary file write vulnerability by embedding symbolic links (symlinks) into transferred storage volumes during migration streams. By directing these links to the underlying host filesystem, the attacker can overwrite critical system files with root privileges, potentially resulting in full host compromise."], "name": "CVE-2026-115377", "public_date": "2026-10-22T19:13:46Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-115377\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-115377\nhttps://github.com/lxc/incus/security/advisories/GHSA-579w-c4rw-c8q3\nhttps://www.vulncheck.com/advisories/incus-before-6.0.7-6.1.0-before-7.0.2-and-7.1.0-before-7.5.0-arbitrary-file-write-via-symlink-in-migration-stream"], "statement": "This vulnerability is rated as Critical because successful exploitation allows an untrusted migration source to escape storage containment and modify arbitrary host files with administrative privileges, leading to full system compromise. Incus is not packaged or supported within Red Hat Enterprise Linux or any other Red Hat enterprise products, so default deployments are unaffected.", "threat_severity": "Critical"}

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