CVE-2025-38396

Advisory lineage Upstream: 0 Downstream: 90
Analyzed
Published: 25 Jul 2025, 12:53
Last modified:11 May 2026, 21:27

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.07% LOW
0% probability +0.05%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Jul 2025, 12:53
Published
Vulnerability first disclosed
11 May 2026, 21:27
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass Export anon_inode_make_secure_inode() to allow KVM guest_memfd to create anonymous inodes with proper security context. This replaces the current pattern of calling alloc_anon_inode() followed by inode_init_security_anon() for creating security context manually. This change also fixes a security regression in secretmem where the S_PRIVATE flag was not cleared after alloc_anon_inode(), causing LSM/SELinux checks to be bypassed for secretmem file descriptors. As guest_memfd currently resides in the KVM module, we need to export this symbol for use outside the core kernel. In the future, guest_memfd might be moved to core-mm, at which point the symbols no longer would have to be exported. When/if that happens is still unclear.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.07%• Percentile: 22%

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 2bfe15c5261212130f1a71f32a300bcf426443d4, < 66d29d757c968d2bee9124816da5d718eb352959 | ≥ 2bfe15c5261212130f1a71f32a300bcf426443d4, < e3eed01347721cd7a8819568161c91d538fbf229 | ≥ 2bfe15c5261212130f1a71f32a300bcf426443d4, < f94c422157f3e43dd31990567b3e5d54b3e5b32b | ≥ 2bfe15c5261212130f1a71f32a300bcf426443d4, < 6ca45ea48530332a4ba09595767bd26d3232743b | ≥ 2bfe15c5261212130f1a71f32a300bcf426443d4, < cbe4134ea4bc493239786220bd69cb8a13493190 | 6.0

  • linux•linux_kernel

    ≥ 6.0, < 6.1.146 | ≥ 6.2, < 6.6.97 | ≥ 6.7, < 6.12.37 | ≥ 6.13, < 6.15.6 | 6.16:rc1 | 6.16:rc2 | 6.16:rc3 | 6.16:rc4

References (6)