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Fencer Vulns
medium 4.5

CVE-2025-64750 json

Singluarity ineffectively applies of selinux / apparmor LSM process labels

published 2025-12-02 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-200289 , GHSA-wwrx-w7c9-rf87 , GO-2025-4177

cvss
4.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

SingularityCE and SingularityPRO are open source container platforms. Prior to SingularityCE 4.3.5 and SingularityPRO 4.1.11 and 4.3.5, if a user relies on LSM restrictions to prevent malicious operations then, under certain circumstances, an attacker can redirect the LSM label write operation so that it is ineffective. The attacker must cause the user to run a malicious container image that redirects the mount of /proc to the destination of a shared mount, either known to be configured on the target system, or that will be specified by the user when running the container. The attacker must also control the content of the shared mount, for example through another malicious container which also binds it, or as a user with relevant permissions on the host system it is bound from. This vulnerability is fixed in SingularityCE 4.3.5 and SingularityPRO 4.1.11 and 4.3.5.

Patch / fix

  • go github.com/sylabs/singularity/v4 4.1.11, 4.3.5
  • sylabs singularity 4.1.11
  • govulncheck-vulndb SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 0.0.20251209T172047-150000.1.127.1

suse advisories SUSE-SU-2025:4395-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

  • singularity Alpine 3.24, Alpine 3.23 4.3.5-r0

alpine advisories ALPINE-CVE-2025-64750

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
GitHub 3.1 4.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
go github.com/sylabs/singularity/v4
>=4.2.0-rc.1, <4.3.5
<4.1.11
all versions
4.3.5
4.1.11
go github.com/sylabs/singularity
all versions
 no fix listed

Affected products

  • sylabs singularity

Classification

Weakness
  • CWE-61 UNIX Symbolic Link (Symlink) Following
  • CWE-706 Use of Incorrectly-Resolved Name or Reference

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.