Information disclosure in cifs-utils

1) Exposure of Sensitive System Information to an Unauthorized Control Sphere

EUVDB-ID: #VU107628

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-2312

CWE-ID: CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exist due to cifs.upcall program from the cifs-utils package makes an upcall to the wrong namespace in containerized environments when trying to obtain Kerberos credentials. A local user can gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

cifs-utils: 6.14 - 7.1

CPE2.3

• cpe:2.3:a:Distrotech:cifs-utils:6.14:*:*:*:*:*:*:*
• cpe:2.3:a:Distrotech:cifs-utils:6.15:*:*:*:*:*:*:*
• cpe:2.3:a:Distrotech:cifs-utils:7.0:*:*:*:*:*:*:*

External links

https://git.samba.org/?p=cifs-utils.git;a=commit;h=89b679228cc1be9739d54203d28289b03352c174
https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs/smb?id=db363b0a1d9e6b9dc556296f1b1007aeb496a8cf

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.