Summary
It was discovered that Bubblewrap incorrectly handled certain temporary
directories. A local attacker could possibly use this issue to cause a
denial of service or execute arbitrary code. This issue only affected
Ubuntu 18.04 LTS. (CVE-2019-12439)
It was discovered that Bubblewrap incorrectly handled certain symlinks
during sandbox setup. A local attacker could possibly use this issue to
create files outside of the sandbox. (CVE-2026-87766)
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | bubblewrap | 0.6.1-1ubuntu0.2 |
| Ubuntu · 24.04 LTS 24.04:LTS | bubblewrap | 0.9.0-1ubuntu0.2 |
| Ubuntu · 26.04 LTS 26.04:LTS | bubblewrap | 0.11.1-1ubuntu0.2 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | bubblewrap | 0.2.1-1ubuntu0.1+esm2 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | bubblewrap | 0.4.0-1ubuntu4.1+esm2 |
Vulnerabilities 2
-
High 8.8
Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup
A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the san…
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High 7.4
bubblewrap.c in Bubblewrap before 0.3.3 misuses temporary directories in /tmp as a mount point. In some particular conf…