In the Linux kernel, the following vulnerability has been resolved:
dlm: prevent NPD when writing a positive value to event_done
do_uevent returns the value written to event_done. In case it is a positive value, new_lockspace would undo all the work, and lockspace would not be set. __dlm_new_lockspace, however, would treat that positive value as a success due to commit 8511a2728ab8 ("dlm: fix use count with multiple joins").
Down the line, device_create_lockspace would pass that NULL lockspace to dlm_find_lockspace_local, leading to a NULL pointer dereference.
Treating such positive values as successes prevents the problem. Given this has been broken for so long, this is unlikely to break userspace expectations.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | May 15, 2025 | Apr 16, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernelUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-tools | Aug 13, 2025 | Jul 18, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-tools-libsUpgrade kernelUpgrade bpftoolUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-tools | Jul 21, 2025 | Apr 16, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftoolUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel | Aug 13, 2025 | Jul 18, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 16, 2025 |
| Suse | — | Upgrade kernel-default-optionalUpgrade gfs2-kmp-defaultUpgrade kselftests-kmp-rtUpgrade reiserfs-kmp-defaultUpgrade kernel-develUpgrade dlm-kmp-rtUpgrade dlm-kmp-defaultUpgrade dtb-alteraUpgrade cluster-md-kmp-64kbUpgrade kernel-debugUpgrade kernel-rt-develUpgrade dtb-mediatekUpgrade gfs2-kmp-64kbUpgrade kernel-64kbUpgrade kernel-azure-optionalUpgrade dtb-sprdUpgrade kernel-default-develUpgrade dtb-appleUpgrade dtb-allwinnerUpgrade dtb-caviumUpgrade gfs2-kmp-azureUpgrade reiserfs-kmp-azureUpgrade kernel-zfcpdumpUpgrade cluster-md-kmp-rtUpgrade dtb-amdUpgrade kernel-64kb-optionalUpgrade kernel-azure-extraUpgrade dtb-hisiliconUpgrade kernel-64kb-extraUpgrade kernel-debug-develUpgrade kernel-symsUpgrade kernel-64kb-develUpgrade dtb-renesasUpgrade ocfs2-kmp-defaultUpgrade kernel-devel-rtUpgrade kernel-defaultUpgrade kernel-default-baseUpgrade ocfs2-kmp-azureUpgrade kernel-default-vdsoUpgrade dtb-amazonUpgrade kernel-default-livepatch-develUpgrade dtb-armUpgrade reiserfs-kmp-rtUpgrade dtb-freescaleUpgrade dtb-xilinxUpgrade ocfs2-kmp-64kbUpgrade kernel-kvmsmall-vdsoUpgrade kernel-source-vanillaUpgrade kernel-syms-rtUpgrade kernel-azureUpgrade dlm-kmp-64kbUpgrade ocfs2-kmp-rtUpgrade kernel-rt_debug-vdsoUpgrade kernel-kvmsmallUpgrade kselftests-kmp-64kbUpgrade kselftests-kmp-defaultUpgrade kernel-docs-htmlUpgrade kernel-default-extraUpgrade dtb-socionextUpgrade kernel-sourceUpgrade kernel-default-manUpgrade kernel-kvmsmall-develUpgrade gfs2-kmp-rtUpgrade kernel-obs-buildUpgrade kernel-syms-azureUpgrade kernel-rt_debugUpgrade kernel-rt-extraUpgrade kernel-rtUpgrade kernel-debug-vdsoUpgrade kernel-rt-optionalUpgrade kernel-obs-qaUpgrade kernel-default-livepatchUpgrade dtb-marvellUpgrade dtb-exynosUpgrade kselftests-kmp-azureUpgrade kernel-rt_debug-develUpgrade cluster-md-kmp-azureUpgrade dtb-lgUpgrade kernel-source-rtUpgrade kernel-docsUpgrade kernel-azure-vdsoUpgrade dtb-rockchipUpgrade dtb-qcomUpgrade dlm-kmp-azureUpgrade dtb-broadcomUpgrade dtb-apmUpgrade kernel-rt-livepatch-develUpgrade kernel-devel-azureUpgrade kernel-azure-develUpgrade kernel-macrosUpgrade cluster-md-kmp-defaultUpgrade reiserfs-kmp-64kbUpgrade kernel-rt-vdsoUpgrade dtb-amlogicUpgrade dtb-nvidiaUpgrade kernel-source-azureUpgrade kernel-default-base-rebuild | Dec 5, 2025 | May 20, 2025 |
| Ubuntu | — | Upgrade linux-image-6.14.0-1007-azureUpgrade linux-image-gcp-64kUpgrade linux-image-genericUpgrade linux-image-azureUpgrade linux-image-6.14.0-1004-realtimeUpgrade linux-image-6.14.0-1007-azure-fdeUpgrade linux-image-6.14.0-1008-gcp-64kUpgrade linux-image-6.14.0-1007-aws-64kUpgrade linux-image-6.14.0-22-generic-64kUpgrade linux-image-6.14.0-1007-oracle-64kUpgrade linux-image-generic-64kUpgrade linux-image-6.14.0-1007-oracleUpgrade linux-image-raspiUpgrade linux-image-realtimeUpgrade linux-image-6.14.0-1007-awsUpgrade linux-image-6.14.0-1008-gcpUpgrade linux-image-awsUpgrade linux-image-oracle-64kUpgrade linux-image-oracleUpgrade linux-image-gcpUpgrade linux-image-azure-fdeUpgrade linux-image-6.14.0-22-genericUpgrade linux-image-6.14.0-1007-raspiUpgrade linux-image-aws-64k | Jun 26, 2025 | Apr 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 13, 2026 | Apr 16, 2025 |
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