CVE-2026-41054
Missing exit out of permission check in haveged could lead to root exploit
No known exploitation. EPSS puts it in the 5th percentile. No fix published yet.
What to do
No fixed build or workaround is published yet. Limit exposure and watch for a patch.
What it is
From the CVE record
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`.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 5th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 65 days, from the signal feeds we watch.
- Record updated
- OpenVAS check added
- Record updated
- Publishedweakness classified
Affected products
- Container suse/sle-micro-rancher/5.3:latestOperating Systems / linux-distro
- Container suse/sle-micro-rancher/5.4:latestOperating Systems / linux-distro
- Container suse/sle-micro/5.5:latestOperating Systems / linux-distro
- Image SLES15-SP4-SAP-BYOSOperating Systems / linux-distro
- Image SLES15-SP4-SAP-BYOS-AzureOperating Systems / linux-distro
- Image SLES15-SP4-SAP-BYOS-EC2Operating Systems / linux-distro
- Image SLES15-SP4-SAP-BYOS-GCEOperating Systems / linux-distro
- Image SLES15-SP4-SAP-HardenedOperating Systems / linux-distro
And 26 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Scored 7.8 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required LowRequires basic user-level privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
References in the record
- bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41054
- openwall.com/lists/oss-security/2026/05/19/3
- openwall.com/lists/oss-security/2026/05/19/4
And 5 more references. See all after sign-in
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