In the Linux kernel, the following vulnerability has been resolved:
fs/fhandle.c: fix a race in call of has_locked_children()
may_decode_fh() is calling has_locked_children() while holding no locks. That's an oopsable race...
The rest of the callers are safe since they are holding namespace_sem and are guaranteed a positive refcount on the mount in question.
Rename the current has_locked_children() to __has_locked_children(), make it static and switch the fs/namespace.c users to it.
Make has_locked_children() a wrapper for __has_locked_children(), calling the latter under read_seqlock_excl(&mount_lock).
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12Upgrade kernel6.12-libbpfUpgrade kernel6.12-libbpf-develUpgrade kernel6.12-modules-extraUpgrade python3-perf6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade bpftool6.12-debuginfoUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-develUpgrade kernel6.12-modules-extra-commonUpgrade bpftool6.12Upgrade perf6.12-debuginfoUpgrade kernel6.12-libbpf-staticUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-headersUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-tools-develUpgrade kernel6.12-toolsUpgrade kernel-livepatch-6.12.40-63.114Upgrade perf6.12 | Sep 9, 2025 | Jul 10, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Nov 11, 2025 | Jul 10, 2025 |
| Redhat_linux | — | No solution exists | Jul 14, 2025 | Jul 10, 2025 |
| Suse | — | Upgrade kernel-rt-develUpgrade cluster-md-kmp-defaultUpgrade kernel-rt-vdsoUpgrade dtb-rockchipUpgrade kernel-rt-extraUpgrade kernel-develUpgrade kselftests-kmp-rtUpgrade dtb-socionextUpgrade kernel-docsUpgrade dlm-kmp-rtUpgrade dtb-xilinxUpgrade dtb-armUpgrade kselftests-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade gfs2-kmp-defaultUpgrade kernel-default-livepatch-develUpgrade dlm-kmp-defaultUpgrade dtb-mediatekUpgrade cluster-md-kmp-64kbUpgrade cluster-md-kmp-rtUpgrade dtb-sprdUpgrade kernel-defaultUpgrade kernel-rt-livepatchUpgrade dtb-qcomUpgrade dtb-nvidiaUpgrade kernel-rtUpgrade kernel-64kb-extraUpgrade kernel-default-optionalUpgrade kernel-obs-buildUpgrade dtb-amlogicUpgrade ocfs2-kmp-rtUpgrade dtb-marvellUpgrade gfs2-kmp-64kbUpgrade dtb-alteraUpgrade kselftests-kmp-64kbUpgrade kernel-obs-qaUpgrade kernel-kvmsmallUpgrade kernel-default-vdsoUpgrade dtb-renesasUpgrade kernel-64kb-optionalUpgrade dlm-kmp-64kbUpgrade kernel-zfcpdumpUpgrade dtb-broadcomUpgrade ocfs2-kmp-64kbUpgrade dtb-exynosUpgrade dtb-amdUpgrade dtb-allwinnerUpgrade kernel-symsUpgrade kernel-kvmsmall-develUpgrade kernel-kvmsmall-vdsoUpgrade dtb-apmUpgrade kernel-macrosUpgrade kernel-sourceUpgrade kernel-default-develUpgrade kernel-64kbUpgrade gfs2-kmp-rtUpgrade kernel-source-vanillaUpgrade dtb-hisiliconUpgrade kernel-rt-optionalUpgrade kernel-64kb-develUpgrade dtb-caviumUpgrade dtb-freescaleUpgrade dtb-appleUpgrade kernel-docs-htmlUpgrade ocfs2-kmp-defaultUpgrade kernel-default-livepatchUpgrade kernel-default-extraUpgrade dtb-lgUpgrade dtb-amazon | Dec 5, 2025 | Nov 6, 2025 |
| Ubuntu | — | Upgrade linux-image-oem-6.14Upgrade linux-image-awsUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-realtimeUpgrade linux-image-virtual-6.14Upgrade linux-image-oem-24.04aUpgrade linux-image-6.14.0-32-genericUpgrade linux-image-gcpUpgrade linux-image-virtualUpgrade linux-image-generic-64k-6.14Upgrade linux-image-oem-24.04bUpgrade linux-image-6.14.0-1012-realtimeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oracleUpgrade linux-image-6.14.0-1014-raspiUpgrade linux-image-oem-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-aws-64kUpgrade linux-image-6.14.0-1016-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-gcp-64kUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-generic-64kUpgrade linux-image-aws-6.14Upgrade linux-image-azureUpgrade linux-image-gcp-64k-6.14Upgrade linux-image-6.14.0-1012-oemUpgrade linux-image-oem-24.04cUpgrade linux-image-6.14.0-1013-aws-64kUpgrade linux-image-6.14.0-1013-awsUpgrade linux-image-raspiUpgrade linux-image-6.14.0-1013-oracleUpgrade linux-image-realtime-6.14Upgrade linux-image-genericUpgrade linux-image-azure-6.14Upgrade linux-image-oracle-6.14Upgrade linux-image-6.14.0-1016-gcp-64kUpgrade linux-image-6.14.0-1012-azureUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-raspi-6.14Upgrade linux-image-6.14.0-1013-oracle-64kUpgrade linux-image-gcp-6.14Upgrade linux-image-aws-64k-6.14Upgrade linux-image-generic-6.14Upgrade linux-image-6.14.0-32-generic-64k | Jul 14, 2025 | Jul 10, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 17, 2026 | Jul 10, 2025 |
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