In the Linux kernel, the following vulnerability has been resolved:
regulator: dummy: force synchronous probing
Sometimes I get a NULL pointer dereference at boot time in kobject_get() with the following call stack:
anatop_regulator_probe() devm_regulator_register() regulator_register() regulator_resolve_supply() kobject_get()
By placing some extra BUG_ON() statements I could verify that this is raised because probing of the 'dummy' regulator driver is not completed ('dummy_regulator_rdev' is still NULL).
In the JTAG debugger I can see that dummy_regulator_probe() and anatop_regulator_probe() can be run by different kernel threads (kworker/u4:*). I haven't further investigated whether this can be changed or if there are other possibilities to force synchronization between these two probe routines. On the other hand I don't expect much boot time penalty by probing the 'dummy' regulator synchronously.
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 | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 8, 2025 |
| Suse | — | Upgrade kernel-devel-azureUpgrade reiserfs-kmp-64kbUpgrade dtb-amdUpgrade kernel-rt-optionalUpgrade dtb-socionextUpgrade dtb-appleUpgrade dtb-lgUpgrade kselftests-kmp-azureUpgrade kernel-rt-livepatch-develUpgrade kernel-rt_debug-develUpgrade dtb-hisiliconUpgrade dtb-renesasUpgrade gfs2-kmp-rtUpgrade kernel-64kbUpgrade gfs2-kmp-64kbUpgrade kernel-syms-azureUpgrade kernel-debug-develUpgrade kernel-obs-buildUpgrade kernel-azureUpgrade kernel-source-rtUpgrade gfs2-kmp-defaultUpgrade ocfs2-kmp-defaultUpgrade dtb-allwinnerUpgrade kernel-zfcpdumpUpgrade dtb-caviumUpgrade dtb-freescaleUpgrade kernel-rt_debugUpgrade ocfs2-kmp-64kbUpgrade kernel-default-vdsoUpgrade kernel-kvmsmallUpgrade kernel-default-develUpgrade kernel-rt-vdsoUpgrade kernel-64kb-optionalUpgrade kernel-azure-extraUpgrade kernel-azure-optionalUpgrade dtb-broadcomUpgrade kernel-kvmsmall-vdsoUpgrade kernel-sourceUpgrade kernel-docs-htmlUpgrade kernel-source-vanillaUpgrade dtb-exynosUpgrade dtb-amazonUpgrade dtb-alteraUpgrade dtb-marvellUpgrade kernel-source-azureUpgrade dlm-kmp-64kbUpgrade kernel-default-livepatchUpgrade kernel-kvmsmall-develUpgrade cluster-md-kmp-azureUpgrade kernel-debug-vdsoUpgrade kernel-debugUpgrade gfs2-kmp-azureUpgrade kselftests-kmp-64kbUpgrade kernel-azure-vdsoUpgrade reiserfs-kmp-defaultUpgrade dtb-xilinxUpgrade kernel-syms-rtUpgrade ocfs2-kmp-rtUpgrade kselftests-kmp-defaultUpgrade dlm-kmp-azureUpgrade kernel-symsUpgrade kernel-rtUpgrade kernel-default-base-rebuildUpgrade kernel-default-baseUpgrade dtb-amlogicUpgrade kernel-default-extraUpgrade dtb-rockchipUpgrade dtb-qcomUpgrade kernel-develUpgrade dtb-nvidiaUpgrade dtb-apmUpgrade reiserfs-kmp-azureUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt-extraUpgrade kernel-obs-qaUpgrade kernel-defaultUpgrade kernel-64kb-develUpgrade dtb-mediatekUpgrade ocfs2-kmp-azureUpgrade cluster-md-kmp-64kbUpgrade kselftests-kmp-rtUpgrade kernel-rt-develUpgrade cluster-md-kmp-defaultUpgrade cluster-md-kmp-rtUpgrade kernel-docsUpgrade kernel-default-optionalUpgrade kernel-azure-develUpgrade dtb-sprdUpgrade reiserfs-kmp-rtUpgrade dtb-armUpgrade dlm-kmp-defaultUpgrade kernel-devel-rtUpgrade kernel-macrosUpgrade kernel-default-livepatch-develUpgrade kernel-64kb-extraUpgrade dlm-kmp-rt | Dec 5, 2025 | May 21, 2025 |
| Ubuntu | — | Upgrade linux-image-lowlatency-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-genericUpgrade linux-image-6.8.0-1039-awsUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.11.0-28-genericUpgrade linux-image-6.8.0-1023-gkeopUpgrade linux-image-6.8.0-1040-gcpUpgrade linux-image-6.8.0-84-genericUpgrade linux-image-6.8.0-85-genericUpgrade linux-image-gkeUpgrade linux-image-gcp-64kUpgrade linux-image-6.11.0-1016-gcpUpgrade linux-image-ibm-classicUpgrade linux-image-realtime-6.8.1Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-generic-64kUpgrade linux-image-6.8.1-1034-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-azure-fde-edgeUpgrade linux-image-azure-nvidia-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidiaUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-gke-64k-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1040-gcp-64kUpgrade linux-image-azure-nvidiaUpgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-1039-nvidia-lowlatency-64kUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1038-azure-fdeUpgrade linux-image-nvidia-64kUpgrade linux-image-6.11.0-1024-oemUpgrade linux-image-6.11.0-1016-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-aws-64kUpgrade linux-image-6.11.0-1018-azure-fdeUpgrade linux-image-6.8.0-2031-raspi-realtimeUpgrade linux-image-6.8.0-1037-ibmUpgrade linux-image-ibmUpgrade linux-image-generic-lpaeUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-azure-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.8.0-1039-nvidiaUpgrade linux-image-oem-22.04cUpgrade linux-image-6.11.0-1015-awsUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-gkeopUpgrade linux-image-6.11.0-1011-realtimeUpgrade linux-image-6.8.0-1036-azureUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1036-gkeUpgrade linux-image-gke-6.8Upgrade linux-image-azureUpgrade linux-image-azure-6.11Upgrade linux-image-raspi-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gcpUpgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1039-raspiUpgrade linux-image-virtual-6.8Upgrade linux-image-azure-fde-6.11Upgrade linux-image-ibm-6.8Upgrade linux-image-azure-fdeUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1038-azureUpgrade linux-image-6.8.0-1037-oracleUpgrade linux-image-6.8.0-1025-azure-nvidiaUpgrade linux-image-awsUpgrade linux-image-generic-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-28-generic-64kUpgrade linux-image-6.11.0-1015-lowlatency-64kUpgrade linux-image-gcp-6.8Upgrade linux-image-6.8.0-1037-oracle-64kUpgrade linux-image-6.8.0-1036-gke-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-azure-fde-6.8Upgrade linux-image-6.8.0-85-generic-64kUpgrade linux-image-6.11.0-1017-oracle-64kUpgrade linux-image-6.11.0-1015-lowlatencyUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.11.0-1014-raspiUpgrade linux-image-6.8.0-1039-aws-64kUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.11.0-1018-azureUpgrade linux-image-6.8.0-1036-azure-fdeUpgrade linux-image-6.8.0-1039-nvidia-lowlatencyUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-84-lowlatencyUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-realtimeUpgrade linux-image-oracleUpgrade linux-image-lowlatency-64k-6.11Upgrade linux-image-lowlatency-6.8Upgrade linux-image-lowlatency-6.11Upgrade linux-image-kvmUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-84-lowlatency-64kUpgrade linux-image-6.11.0-1017-oracleUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gke-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-virtualUpgrade linux-image-oem-24.04bUpgrade linux-image-oem-22.04bUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1039-nvidia-64kUpgrade linux-image-6.8.0-84-generic-64kUpgrade linux-image-lowlatency-64k-6.8 | Jun 26, 2025 | Apr 8, 2025 |
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