CVE-2026-108119
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
28/100
Published: 2026-10-09
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
No Auth
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
High
PR:
None
UI:
Required
S:
Unchanged
C:
None
I:
High
A:
High
Description
A flaw was found in busybox. The tar applet's deferred link-creation handling for symlink and hardlink entries with unsafe-looking targets does not validate that the resolved destination remains inside the extraction directory once the deferred link is created. An attacker can craft a tar archive using a symlink target of exactly '..' combined with a deferred hardlink to create a new file outside the extraction directory, or reuse an extraction directory across two archives to replace an existing file outside it. If the archive is extracted with elevated privileges, this flaw can lead to privilege escalation or arbitrary code execution.