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 linuxNo solution exists | May 15, 2025 | Apr 16, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernelUpgrade bpftoolUpgrade kernel-abi-stablelists | Aug 13, 2025 | Jul 18, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade bpftoolUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade python3-perf | Jul 21, 2025 | Apr 16, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade bpftoolUpgrade python3-perf | Aug 13, 2025 | Jul 18, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 16, 2025 |
| Suse | — | Upgrade kernel-azure-optionalUpgrade gfs2-kmp-64kbUpgrade kernel-64kbUpgrade kernel-debugUpgrade kernel-develUpgrade dlm-kmp-rtUpgrade dtb-hisiliconUpgrade gfs2-kmp-defaultUpgrade kernel-64kb-develUpgrade dtb-mediatekUpgrade kernel-rt-develUpgrade dtb-allwinnerUpgrade kernel-azure-extraUpgrade gfs2-kmp-azureUpgrade reiserfs-kmp-azureUpgrade dtb-caviumUpgrade kernel-symsUpgrade kernel-debug-develUpgrade ocfs2-kmp-defaultUpgrade cluster-md-kmp-64kbUpgrade reiserfs-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade dtb-amazonUpgrade kernel-default-livepatch-develUpgrade dtb-xilinxUpgrade kernel-defaultUpgrade kernel-64kb-optionalUpgrade kernel-devel-rtUpgrade dtb-amdUpgrade dtb-renesasUpgrade cluster-md-kmp-rtUpgrade kernel-zfcpdumpUpgrade kselftests-kmp-rtUpgrade dtb-armUpgrade kernel-default-develUpgrade kernel-default-optionalUpgrade dlm-kmp-defaultUpgrade kernel-64kb-extraUpgrade dtb-freescaleUpgrade reiserfs-kmp-rtUpgrade kernel-default-vdsoUpgrade kernel-default-baseUpgrade dtb-appleUpgrade dtb-alteraUpgrade dtb-sprdUpgrade kernel-docsUpgrade kernel-azure-vdsoUpgrade dtb-rockchipUpgrade dlm-kmp-azureUpgrade kernel-source-rtUpgrade dtb-exynosUpgrade kernel-rt-extraUpgrade kselftests-kmp-64kbUpgrade dtb-broadcomUpgrade ocfs2-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-rt-livepatch-develUpgrade kernel-kvmsmall-vdsoUpgrade kernel-devel-azureUpgrade kernel-default-base-rebuildUpgrade kernel-source-vanillaUpgrade kernel-azure-develUpgrade dtb-amlogicUpgrade cluster-md-kmp-defaultUpgrade reiserfs-kmp-64kbUpgrade kernel-rt-vdsoUpgrade kernel-macrosUpgrade dtb-socionextUpgrade kernel-sourceUpgrade kernel-kvmsmall-develUpgrade kernel-default-manUpgrade kernel-default-extraUpgrade kernel-docs-htmlUpgrade dtb-lgUpgrade cluster-md-kmp-azureUpgrade kselftests-kmp-defaultUpgrade kernel-kvmsmallUpgrade kernel-syms-azureUpgrade kernel-rt_debugUpgrade kernel-rtUpgrade kernel-obs-buildUpgrade kernel-debug-vdsoUpgrade kernel-syms-rtUpgrade kernel-rt_debug-vdsoUpgrade kernel-azureUpgrade dtb-apmUpgrade dlm-kmp-64kbUpgrade ocfs2-kmp-rtUpgrade dtb-nvidiaUpgrade gfs2-kmp-rtUpgrade dtb-marvellUpgrade kselftests-kmp-azureUpgrade kernel-rt_debug-develUpgrade kernel-rt-optionalUpgrade kernel-obs-qaUpgrade kernel-default-livepatchUpgrade dtb-qcom | Dec 5, 2025 | May 20, 2025 |
| Ubuntu | — | Upgrade linux-image-awsUpgrade linux-image-gcpUpgrade linux-image-oracleUpgrade linux-image-6.14.0-1008-gcpUpgrade linux-image-aws-64kUpgrade linux-image-6.14.0-1007-awsUpgrade linux-image-azure-fdeUpgrade linux-image-oracle-64kUpgrade linux-image-6.14.0-1007-raspiUpgrade linux-image-6.14.0-22-genericUpgrade linux-image-raspiUpgrade linux-image-generic-64kUpgrade linux-image-6.14.0-1007-aws-64kUpgrade linux-image-6.14.0-22-generic-64kUpgrade linux-image-6.14.0-1007-oracleUpgrade linux-image-6.14.0-1007-azureUpgrade linux-image-6.14.0-1004-realtimeUpgrade linux-image-6.14.0-1007-azure-fdeUpgrade linux-image-6.14.0-1007-oracle-64kUpgrade linux-image-realtimeUpgrade linux-image-azureUpgrade linux-image-6.14.0-1008-gcp-64kUpgrade linux-image-genericUpgrade linux-image-gcp-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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