USN-8139-1: cargo-c vulnerability
Publication date
1 April 2026
Overview
cargo-c could be made to modify permissions on arbitrary directories.
Releases
Packages
- rust-cargo-c - Helper program to build and install c-like libraries
Details
It was discovered that tar-rs embedded in cargo-c incorrectly handled
symlinks when unpacking a tar archive. If a user or automated system were
tricked into processing a specially crafted tar archive, a remote attacker
could use this issue to modify permissions of arbitrary directories outside
the extraction root, and possibly escalate privileges.
It was discovered that tar-rs embedded in cargo-c incorrectly handled
symlinks when unpacking a tar archive. If a user or automated system were
tricked into processing a specially crafted tar archive, a remote attacker
could use this issue to modify permissions of arbitrary directories outside
the extraction root, and possibly escalate privileges.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 25.10 questing | cargo-c – 0.10.11-1ubuntu1.1 | ||
| librust-cargo-c-dev – 0.10.11-1ubuntu1.1 | |||
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