Missing exit out of permission check in haveged could lead to root exploit
CVE-2026-41054 is fixed in 2 products on 1 platform, first by haveged 1.9.14-1ubuntu1+esm1~22.04.1, released May 20, 2026. It is not reported as exploited. Patch Radar priority: High.
In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`ASCII_NAK`), it **fails to stop execution**. The code proceeds to the `switch` statement, allowing any local unprivileged user to execute privileged commands such as `MAGIC_CHROOT`.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| haveged · Debian 12.15 (bookworm) | 1.9.14-1+deb12u1 | DEBIAN-CVE-2026-41054 | May 27, 2026 |
| haveged · Debian 13.5 (trixie) | 1.9.19-12+deb13u1 | DEBIAN-CVE-2026-41054 | May 27, 2026 |
| haveged · Debian 14 | 1.9.21-1 | DEBIAN-CVE-2026-41054 | May 27, 2026 |
| haveged · Ubuntu 22.04.1 LTS (jammy) | 1.9.14-1ubuntu1+esm1~22.04.1 | haveged 1.9.14-1ubuntu1+esm1~22.04.1 | May 20, 2026 |
| haveged · Ubuntu 24.04.5 LTS (noble) | 1.9.14-1ubuntu2+esm1~24.04.1 | haveged 1.9.14-1ubuntu2+esm1~24.04.1 | May 20, 2026 |
| haveged · Ubuntu 25.10 (questing) | 1.9.19-12+deb13u1build0.25.10.1 | haveged 1.9.19-12+deb13u1build0.25.10.1 | May 20, 2026 |
| haveged · Ubuntu 26.04.1 LTS (resolute) | 1.9.19-14ubuntu0.1 | haveged 1.9.19-14ubuntu0.1 | May 20, 2026 |
| haveged · opensuse-leap 16.0 | 1.9.19-bp160.2.1 | OPENSUSE-SU-2026:21958-1 | Sep 24, 2026 |
| libhavege2 · Ubuntu 22.04.1 LTS (jammy) | 1.9.14-1ubuntu1+esm1~22.04.1 | libhavege2 1.9.14-1ubuntu1+esm1~22.04.1 | May 20, 2026 |
| libhavege2 · Ubuntu 24.04.5 LTS (noble) | 1.9.14-1ubuntu2+esm1~24.04.1 | libhavege2 1.9.14-1ubuntu2+esm1~24.04.1 | May 20, 2026 |
| libhavege2 · Ubuntu 25.10 (questing) | 1.9.19-12+deb13u1build0.25.10.1 | libhavege2 1.9.19-12+deb13u1build0.25.10.1 | May 20, 2026 |
| libhavege2 · Ubuntu 26.04.1 LTS (resolute) | 1.9.19-14ubuntu0.1 | libhavege2 1.9.19-14ubuntu0.1 | May 20, 2026 |
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