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High · 7.8 CVE-2025-38396 EUVD-2025-22607GHSA-8m46-hm8p-v8rj

fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass

Published Jul 25, 2025 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.14 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-6.8 Package: linux-intel Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-lowlatency Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.14 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.14 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Platform: Linux Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

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.

Affected products

VendorProductAffectedFixed
Linux Linux 6.0 6.1.146

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.12.37-1 —
Debian 13 linux 6.12.37-1 —
Debian 12 linux 6.1.147-1 DSA-5973-1
Debian 11 linux-6.1 6.1.153-1~deb11u1 DLA-4328-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 24.04 LTS linux-bluefield 6.8.0-1016.20 —
Ubuntu 25.10 linux-azure-fde No fix yet —
Ubuntu 24.04 LTS linux 6.8.0-100.100 USN-8028-1
Ubuntu 24.04 LTS linux-aws +1 6.8.0-1046.49 USN-8028-5
Ubuntu 24.04 LTS linux-aws-6.14 +1 6.14.0-1015.15~24.04.1 USN-7833-3, USN-7833-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1046.52 USN-8074-1
Ubuntu 24.04 LTS linux-azure-6.14 6.14.0-1014.14~24.04.1 USN-7834-1
Ubuntu 24.04 LTS linux-azure-fde 6.8.0-1046.53 —
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1039.42 —
Ubuntu 24.04 LTS linux-azure-nvidia-6.14 6.14.0-1007.7 USN-7834-1
Ubuntu 24.04 LTS linux-gcp 6.8.0-1047.50 USN-8031-3
Ubuntu 24.04 LTS linux-gcp-6.14 6.14.0-1018.19~24.04.1 USN-7833-4
Ubuntu 24.04 LTS linux-gke 6.8.0-1043.48 USN-8031-3
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1030.33 USN-8028-5
Ubuntu 24.04 LTS linux-hwe-6.14 6.14.0-34.34~24.04.1 USN-7856-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1044.44 USN-8028-8
Ubuntu 24.04 LTS linux-intel +10 No fix yet —
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-100.100.1 USN-8052-1
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1046.49.1 USN-8028-7
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1020.20 —
Ubuntu 24.04 LTS linux-oem-6.14 6.14.0-1014.14 USN-7833-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1043.44 USN-8028-5
Ubuntu 24.04 LTS linux-raspi 6.8.0-1047.51 USN-8028-1
Ubuntu 24.04 LTS linux-riscv-6.14 6.14.0-34.34.1~24.04.1 —
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1023.24 USN-8052-2
Ubuntu 22.04 LTS linux-aws-6.8 +1 6.8.0-1046.49~22.04.1 USN-8028-5
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1051.57~22.04.1 USN-8126-1
Ubuntu 22.04 LTS linux-azure-fde-6.8 6.8.0-1046.53~22.04.1 —
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1047.50~22.04.2 USN-8031-1
Ubuntu 22.04 LTS linux-hwe-6.8 +1 6.8.0-100.100~22.04.1 USN-8028-6
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1044.44~22.04.1 USN-8028-8
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-100.100.1~22.04.1 USN-8028-6
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1043.44~22.04.1 USN-8028-5
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2037.38 USN-8028-3
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1041.42 USN-8028-3
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.14 6.14.0-1014.14~24.04.1 USN-7833-2
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1041.42~22.04.1 USN-8028-2
Ubuntu Pro FIPS-updates 24.04 LTS linux-aws-fips 6.8.0-1046.49+fips1 USN-8028-4
Ubuntu Pro FIPS-updates 24.04 LTS linux-azure-fips 6.8.0-1046.52+fips1 USN-8074-2
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-100.100+fips1 USN-8028-4
Ubuntu Pro FIPS-updates 24.04 LTS linux-gcp-fips 6.8.0-1047.50+fips1 USN-8031-2
ReleasePackageFixed inAdvisory
RHEL 10 rv +77 6.12.0-55.37.1.el10_0 RHSA-2025:16904
RHEL 9 rv +75 5.14.0-611.5.1.el9_7 RHSA-2025:20518

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 10 kernel-doc +1 6.12.0-55.37.1.el10_0 ALSA-2025:16904
AlmaLinux 9 rv +73 5.14.0-611.5.1.el9_7 ALSA-2025:20518

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 10 kernel 6.12.0-55.37.1.el10_0 RLSA-2025:16904
Rocky Linux 9 kernel 5.14.0-611.5.1.el9_7 RLSA-2025:20518
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +5 6.4.0-150700.53.11.1 SUSE-SU-2025:02997-1
SLES 15 SP7 kernel-azure +2 6.4.0-150700.20.11.1 SUSE-SU-2025:03011-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.11.1.150700.17.9.4 SUSE-SU-2025:02997-1
SLES 15 SP7 kernel-docs 6.4.0-150700.53.11.3 SUSE-SU-2025:02997-1
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.65.1 SUSE-SU-2025:02996-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.48.1 SUSE-SU-2025:02969-1
SLES 15 SP6 kernel-coco +3 6.4.0-15061.28.coco15sp6.1 SUSE-SU-2025:02923-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.65.1.150600.12.28.4 SUSE-SU-2025:02996-1
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 kernel-64kb +7 6.12.0-160000.6.1 SUSE-SU-2025:21139-1
SLES for SAP 16.0 kernel-default-base 6.12.0-160000.6.1.160000.2.4 SUSE-SU-2025:21139-1
SLES 16.0 kernel-64kb +7 6.12.0-160000.6.1 SUSE-SU-2025:21179-1, SUSE-SU-2025:21139-1
SLES 16.0 kernel-default-base 6.12.0-160000.6.1.160000.2.4 SUSE-SU-2025:21139-1
SLE Micro 6.2 kernel-default-base 6.12.0-160000.6.1.160000.2.4 SUSE-SU-2025:21074-1
SLE Micro 6.2 kernel-rt +5 6.12.0-160000.6.1 SUSE-SU-2026:20560-1, SUSE-SU-2025:21074-1
SLE Micro 6.1 kernel-default-base 6.4.0-32.1.21.10 SUSE-SU-2025:20602-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_10 6-1.1 SUSE-SU-2025:20918-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_4 11-1.1 SUSE-SU-2025:20912-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_5 10-1.1 SUSE-SU-2025:20913-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_7 8-1.3 SUSE-SU-2025:20915-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_9 6-1.2 SUSE-SU-2025:20917-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_2 +1 14-1.1 SUSE-SU-2025:20920-1, SUSE-SU-2025:20909-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_4 12-1.2 SUSE-SU-2025:20907-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_5 10-1.2 SUSE-SU-2025:20903-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_6 +1 8-3.1 SUSE-SU-2025:20914-1, SUSE-SU-2025:20905-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_7 +3 7-1.2 SUSE-SU-2025:20916-1, SUSE-SU-2025:20906-1, SUSE-SU-2025:20904-1
SLE Micro 6.1 kernel-rt +1 6.4.0-35.1 SUSE-SU-2025:20601-1
SLE Micro 6.1 kernel-source +2 6.4.0-32.1 SUSE-SU-2025:20602-1
SLE Micro 6.0 kernel-default-base 6.4.0-32.1.21.10 SUSE-SU-2025:20586-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_10 6-1.1 SUSE-SU-2025:20879-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_4 11-1.1 SUSE-SU-2025:20873-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_5 10-1.1 SUSE-SU-2025:20874-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_7 8-1.3 SUSE-SU-2025:20876-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_9 6-1.2 SUSE-SU-2025:20878-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_2 +1 14-1.1 SUSE-SU-2025:20890-1, SUSE-SU-2025:20886-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_3 +1 14-1.2 SUSE-SU-2025:20891-1, SUSE-SU-2025:20884-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_4 12-1.2 SUSE-SU-2025:20885-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_5 10-1.2 SUSE-SU-2025:20881-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_6 +1 8-3.1 SUSE-SU-2025:20887-1, SUSE-SU-2025:20875-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_7 +3 7-1.2 SUSE-SU-2025:20888-1, SUSE-SU-2025:20883-1, SUSE-SU-2025:20882-1
SLE Micro 6.0 kernel-rt +1 6.4.0-35.1 SUSE-SU-2025:20577-1
SLE Micro 6.0 kernel-source +2 6.4.0-32.1 SUSE-SU-2025:20586-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.11.1 SUSE-SU-2025:02997-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_0 6-150700.3.1 SUSE-SU-2025:03650-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_3 1-150700.1.5.1 SUSE-SU-2025:02853-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_0 6-150700.3.15.1 SUSE-SU-2025:3765-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_1 +2 6-150700.2.1 SUSE-SU-2025:3772-1, SUSE-SU-2025:3771-1, SUSE-SU-2025:03646-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_3 1-150700.15.3.4 SUSE-SU-2025:02997-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.65.1 SUSE-SU-2025:02996-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_14 1-150600.1.5.1 SUSE-SU-2025:03023-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_5 17-150600.2.1 SUSE-SU-2025:03638-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_10 +1 8-150600.2.1 SUSE-SU-2025:3762-1, SUSE-SU-2025:03650-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_11 7-150600.2.1 SUSE-SU-2025:3755-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_13 +1 6-150600.2.1 SUSE-SU-2025:3764-1, SUSE-SU-2025:03646-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_14 1-150600.13.3.4 SUSE-SU-2025:02996-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_4 +1 19-150600.2.1 SUSE-SU-2025:3742-1, SUSE-SU-2025:03636-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_6 14-150600.2.1 SUSE-SU-2025:3748-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_9 9-150600.2.1 SUSE-SU-2025:3768-1
SUSE Real Time Module 15 SP7 kernel-rt +2 6.4.0-150700.7.13.1 SUSE-SU-2025:02853-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.49.1 SUSE-SU-2025:03023-1
ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 kernel-default-base 6.12.0-160000.6.1.160000.2.4 openSUSE-SU-2025:20081-1
openSUSE Leap 16.0 kernel-rt +10 6.12.0-160000.6.1 openSUSE-SU-2025:20081-1
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.65.1 SUSE-SU-2025:02996-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.48.1 SUSE-SU-2025:02969-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.65.1.150600.12.28.4 SUSE-SU-2025:02996-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.49.1 SUSE-SU-2025:03023-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.12.37-61.105 +1 1:1.0-0.amzn2023 ALAS2023-2025-1144, ALAS2023-2025-1130
Amazon Linux 2023 perf +14 1:6.1.147-172.266.amzn2023 ALAS2023-2025-1144
Amazon Linux 2023 perf6.12 +14 1:6.12.37-61.105.amzn2023 ALAS2023-2025-1130

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel 6.6.104.2-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 10 rv +28 6.12.0-55.37.1.0.1.el10_0 ELSA-2025-16904
Oracle Linux 9 kernel-uek +34 6.12.0-103.40.4.1.el10uek ELSA-2025-20551

Advisories 50

References