CVE-2025-2312 cifs.upcall makes an upcall to the wrong namespace in containerized environments
Attackers in containerized environments can access host Kerberos credentials due to incorrect namespace handling in cifs.upcall.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-2312?
CVE-2025-2312 is a medium-severity vulnerability in cifs-utils, published on 25 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in cifs-utils. When trying to obtain Kerberos credentials, the cifs.upcall program from the cifs-utils package makes an upcall to the wrong namespace in containerized environments. This issue may lead to disclosing sensitive data from the host's Kerberos credentials cache.
Weakness: CWE-488
Which versions are affected by CVE-2025-2312?
Linux distribution packages (5)
cifs-utils SUSE:Linux Enterprise Micro 5.3 | All versions | 6.15-150400.3.12.1 |
cifs-utils SUSE:Linux Enterprise Micro 5.4 | All versions | 6.15-150400.3.12.1 |
cifs-utils SUSE:Linux Enterprise Micro 5.5 | All versions | 6.15-150400.3.12.1 |
cifs-utils SUSE:Linux Enterprise Module for Basesystem 15 SP6 | All versions | 6.15-150400.3.12.1 |
cifs-utils openSUSE:Leap 15.6 | All versions | 6.15-150400.3.12.1 |
How do I fix CVE-2025-2312?
Apply the vendor's patch.
Is CVE-2025-2312 being exploited?
There is no known exploitation of CVE-2025-2312 in the wild and no public exploit code.
Sources
Also known as AZL-59273, AZL-59284, DEBIAN-CVE-2025-2312, GHSA-c3c3-3xh6-r623, MGASA-2025-0176, OESA-2026-3548 and 5 more.