CVE-2025-38396

HIGH EPSS 5.9%
Published Jul 25, 202511mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jul 25, 2025 11mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥6.0  –  <6.1.146
linuxlinux_kernel*≥6.2  –  <6.6.97
linuxlinux_kernel*≥6.7  –  <6.12.37
linuxlinux_kernel*≥6.13  –  <6.15.6
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
debiandebian_linux11.0any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/66d29d757c968d2bee9124816da5d718eb352959
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ca45ea48530332a4ba09595767bd26d3232743b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cbe4134ea4bc493239786220bd69cb8a13493190
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e3eed01347721cd7a8819568161c91d538fbf229
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f94c422157f3e43dd31990567b3e5d54b3e5b32b
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Third Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/66d29d757c968d2bee9124816da5d718eb352959
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ca45ea48530332a4ba09595767bd26d3232743b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cbe4134ea4bc493239786220bd69cb8a13493190
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e3eed01347721cd7a8819568161c91d538fbf229
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f94c422157f3e43dd31990567b3e5d54b3e5b32b
    Patch