CVE-2026-41054
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
In the `socket_handler` function in `src/havegecmd.c` of haveged, the credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`) is incomplete. Although it detects that the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`ASCII_NAK`), the code **fails to stop execution** and proceeds to the `switch` statement, allowing any local unprivileged user to execute privileged commands such as `MAGIC_CHROOT`.
Risk Assessment
A local unprivileged user can execute privileged operations such as chroot, potentially leading to privilege escalation and system integrity compromise.
Recommendation
Immediately update haveged to a version that fixes the credential check, or apply temporary firewall rules to block access to the UNIX socket for unprivileged users.
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Original NVD description (English source)
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`.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

