NeKernal Multiple Memory Corruption Vulnerabilities in mkfs.hefs

published 2025-06-24 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-19027

cvss: 8.8; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

NeKernal is a free and open-source operating system stack. Prior to version 0.0.3, there are several memory safety issues that can lead to memory corruption, disk image corruption, denial of service, and potential code execution. These issues stem from unchecked memory operations, unsafe typecasting, and improper input validation. This issue has been patched in version 0.0.3.

Patch / fix

links 4

github.com/nekernel-org/nekernel@6506875 commit
github.com/nekernel-org/nekernel@6511afb commit
github.com/nekernel-org/nekernel#35 pull request
github.com/nekernel-org/nekernel#36 pull request

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 16 mo ago (2025-06-24)

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

nekernel-org nekernel

Classification

Weakness

CWE-20 Improper Input Validation
CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

CVE List CVE-2025-52568
NVD CVE-2025-52568

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.

Summary