1. Ubuntu Security Notices
  2. USN-8168-1

USN-8168-1: Rust vulnerability

Publication date

13 April 2026

Overview

rustc could be made to modify permissions on arbitrary directories.

Releases

Packages

Details

It was discovered that tar-rs embedded in rustc 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 rustc 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 rustc-1.85 –  1.85.1+dfsg0ubuntu2-0ubuntu1.25.04.1
rustc-1.88 –  1.88.0+dfsg0ubuntu1-0ubuntu2
24.04 LTS noble rustc –  1.75.0+dfsg0ubuntu1-0ubuntu7.4
rustc-1.74 –  1.74.1+dfsg0ubuntu1-0ubuntu15
rustc-1.76 –  1.76.0+dfsg0ubuntu1-0ubuntu0.24.04.2
rustc-1.77 –  1.77.2+dfsg1ubuntu1-0ubuntu0.24.04.1
rustc-1.78 –  1.78.0+dfsg1ubuntu1-0ubuntu0.24.04.2
rustc-1.79 –  1.79.0+dfsg1ubuntu1-0ubuntu0.24.04.1
rustc-1.80 –  1.80.1+dfsg0ubuntu1-0ubuntu0.24.04.01
rustc-1.81 –  1.81.0+dfsg0ubuntu1-0ubuntu0.24.04.1
rustc-1.82 –  1.82.0+dfsg0ubuntu0-0ubuntu0.24.04.1
rustc-1.83 –  1.83.0+dfsg0ubuntu1~bpo2-0ubuntu0.24.04.1
rustc-1.84 –  1.84.1+dfsg0ubuntu1~bpo2-0ubuntu2.24.04.1
rustc-1.85 –  1.85.1+dfsg0ubuntu2~bpo0-0ubuntu0.24.04.2
rustc-1.89 –  1.89.0+dfsg~24.04-0ubuntu0.24.04.2
rustc-1.91 –  1.91.1+dfsg~24.04-0ubuntu0.24.04.2
22.04 LTS jammy rustc –  1.75.0+dfsg0ubuntu1~bpo0-0ubuntu0.22.04.1
rustc-1.62 –  1.62.1+dfsg1-1ubuntu0.22.04.3
rustc-1.76 –  1.76.0+dfsg0ubuntu1~bpo0-0ubuntu0.22.04.1
rustc-1.77 –  1.77.2+dfsg1ubuntu1~bpo0-0ubuntu0.22.04.1
rustc-1.78 –  1.78.0+dfsg1ubuntu1~bpo0-0ubuntu0.22.04.1
rustc-1.79 –  1.79.0+dfsg1ubuntu1~bpo0-0ubuntu0.22.04.1
rustc-1.80 –  1.80.1+dfsg0ubuntu1~bpo0-0ubuntu0.22.04.1
rustc-1.81 –  1.81.0+dfsg0ubuntu0-0ubuntu0.22.04.1
rustc-1.82 –  1.82.0+dfsg0ubuntu0~jammy-0ubuntu0.22.04.1
rustc-1.83 –  1.83.0+dfsg0ubuntu2~bpo2-0ubuntu2.22.04.1
rustc-1.84 –  1.84.1+dfsg0ubuntu1~bpo10-0ubuntu4.22.04.1
rustc-1.85 –  1.85.1+dfsg0ubuntu2~bpo0-0ubuntu1.22.04.1
rustc-1.89 –  1.89.0+dfsg~24.04-0ubuntu0.22.04.2
rustc-1.91 –  1.91.1+dfsg~22.04-0ubuntu0.22.04.3

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References

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