In the Linux kernel, the following vulnerability has been resolved:
net: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered
Russell King reports that a system with mv88e6xxx dereferences a NULL pointer when unbinding this driver: https://lore.kernel.org/netdev/[email protected]/
The crash seems to be in devlink_region_destroy(), which is not NULL tolerant but is given a NULL devlink global region pointer.
At least on some chips, some devlink regions are conditionally registered since the blamed commit, see mv88e6xxx_setup_devlink_regions_global():
if (cond && !cond(chip)) continue;
These are MV88E6XXX_REGION_STU and MV88E6XXX_REGION_PVT. If the chip does not have an STU or PVT, it should crash like this.
To fix the issue, avoid unregistering those regions which are NULL, i.e. were skipped at mv88e6xxx_setup_devlink_regions_global() time.
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 linuxUpgrade linux-6.1 | May 5, 2025 | May 1, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Jul 17, 2025 | May 1, 2025 |
| Suse | — | Upgrade cluster-md-kmp-rtUpgrade kernel-kvmsmall-develUpgrade kernel-develUpgrade kernel-azureUpgrade kernel-azure-optionalUpgrade cluster-md-kmp-azureUpgrade dtb-xilinxUpgrade kernel-rt-optionalUpgrade kernel-64kb-develUpgrade kernel-rt_debug-develUpgrade kernel-source-azureUpgrade reiserfs-kmp-azureUpgrade kernel-source-vanillaUpgrade dtb-lgUpgrade dtb-alteraUpgrade dtb-mediatekUpgrade kernel-zfcpdumpUpgrade kernel-devel-rtUpgrade kernel-rtUpgrade kernel-kvmsmallUpgrade kernel-default-livepatchUpgrade kernel-default-optionalUpgrade kernel-source-rtUpgrade ocfs2-kmp-rtUpgrade ocfs2-kmp-64kbUpgrade dtb-caviumUpgrade dtb-freescaleUpgrade kselftests-kmp-64kbUpgrade kernel-syms-azureUpgrade gfs2-kmp-rtUpgrade kselftests-kmp-azureUpgrade kernel-azure-develUpgrade kernel-default-base-rebuildUpgrade dlm-kmp-64kbUpgrade dtb-rockchipUpgrade kernel-rt-develUpgrade ocfs2-kmp-defaultUpgrade gfs2-kmp-64kbUpgrade kernel-debug-vdsoUpgrade kernel-default-develUpgrade dtb-exynosUpgrade kernel-64kbUpgrade kernel-default-vdsoUpgrade kernel-devel-azureUpgrade dtb-amazonUpgrade ocfs2-kmp-azureUpgrade gfs2-kmp-defaultUpgrade reiserfs-kmp-64kbUpgrade dtb-allwinnerUpgrade kernel-sourceUpgrade gfs2-kmp-azureUpgrade dtb-qcomUpgrade dtb-amlogicUpgrade dtb-broadcomUpgrade dlm-kmp-azureUpgrade cluster-md-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade kernel-docs-htmlUpgrade kselftests-kmp-rtUpgrade kernel-64kb-optionalUpgrade dtb-amdUpgrade kernel-syms-rtUpgrade kernel-default-baseUpgrade dlm-kmp-defaultUpgrade cluster-md-kmp-64kbUpgrade kernel-defaultUpgrade kernel-macrosUpgrade kernel-obs-qaUpgrade dtb-sprdUpgrade dtb-nvidiaUpgrade kernel-debugUpgrade kernel-obs-buildUpgrade kernel-azure-extraUpgrade reiserfs-kmp-defaultUpgrade kernel-azure-vdsoUpgrade kernel-rt-extraUpgrade kernel-kvmsmall-vdsoUpgrade reiserfs-kmp-rtUpgrade dtb-apmUpgrade kselftests-kmp-defaultUpgrade dtb-hisiliconUpgrade dtb-armUpgrade kernel-default-extraUpgrade dlm-kmp-rtUpgrade kernel-rt-vdsoUpgrade dtb-marvellUpgrade dtb-socionextUpgrade kernel-debug-develUpgrade kernel-64kb-extraUpgrade dtb-appleUpgrade kernel-rt_debug-vdsoUpgrade dtb-renesasUpgrade kernel-rt_debugUpgrade kernel-docsUpgrade kernel-default-livepatch-develUpgrade kernel-syms | Dec 5, 2025 | Jun 12, 2025 |
| Ubuntu | — | Upgrade linux-image-6.14.0-22-generic-64kUpgrade linux-image-5.15.0-1041-nvidia-tegra-rtUpgrade linux-image-6.14.0-1008-gcp-64kUpgrade linux-image-5.15.0-1088-aws-fipsUpgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-oem-22.04aUpgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-6.8.0-1046-azureUpgrade linux-image-5.15.0-1052-xilinx-zynqmpUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-gke-64kUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-lowlatency-5.15Upgrade linux-image-fipsUpgrade linux-image-5.15.0-1082-nvidia-lowlatencyUpgrade linux-image-gkeop-6.8Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.14.0-1007-oracle-64kUpgrade linux-image-aws-5.15Upgrade linux-image-6.14.0-1007-oracleUpgrade linux-image-gcp-6.8Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-6.14.0-1007-awsUpgrade linux-image-raspi-nolpaeUpgrade linux-image-generic-64k-6.8Upgrade linux-image-5.15.0-1030-nvidia-tegra-igx-rtUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-5.15.0-1094-azure-fipsUpgrade linux-image-5.15.0-1041-nvidia-tegraUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-5.15.0-144-lowlatency-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-generic-5.15Upgrade linux-image-awsUpgrade linux-image-ibmUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.15.0-1088-realtimeUpgrade linux-image-azure-fips-5.15Upgrade linux-image-ibm-classicUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-1087-gcp-fipsUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-5.15.0-1085-gkeUpgrade linux-image-5.15.0-1094-azureUpgrade linux-image-gke-5.15Upgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-azure-fipsUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-5.15.0-144-lowlatencyUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-aws-64k-5.15Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-5.15.0-1088-awsUpgrade linux-image-ibm-5.15Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-lowlatency-64kUpgrade linux-image-realtimeUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-lowlatency-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-gcp-5.15Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-1088-aws-64kUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-5.15.0-1081-intel-iot-realtimeUpgrade linux-image-6.14.0-1004-realtimeUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-virtualUpgrade linux-image-aws-fips-5.15Upgrade linux-image-6.14.0-22-genericUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-azure-cvmUpgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-nvidia-6.8Upgrade linux-image-oracleUpgrade linux-image-6.14.0-1007-raspiUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-generic-64k-5.15Upgrade linux-image-oem-20.04Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-6.14.0-1007-aws-64kUpgrade linux-image-5.15.0-144-genericUpgrade linux-image-5.15.0-1070-gkeopUpgrade linux-image-raspi-realtimeUpgrade linux-image-oem-22.04dUpgrade linux-image-nvidiaUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-gkeopUpgrade linux-image-genericUpgrade linux-image-nvidia-64kUpgrade linux-image-raspi-5.15Upgrade linux-image-nvidia-tegraUpgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-fips-5.15Upgrade linux-image-aws-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-ibm-6.8Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-oem-22.04cUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-azure-6.8Upgrade linux-image-5.15.0-144-fipsUpgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.14.0-1007-azure-fdeUpgrade linux-image-azure-5.15Upgrade linux-image-5.15.0-1085-oracleUpgrade linux-image-5.15.0-1082-nvidiaUpgrade linux-image-5.15.0-1030-nvidia-tegra-igxUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-fips-6.8Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-oem-22.04bUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-intelUpgrade linux-image-raspi-6.8Upgrade linux-image-6.8.0-100-genericUpgrade linux-image-aws-64k-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-6.14.0-1008-gcpUpgrade linux-image-6.14.0-1007-azureUpgrade linux-image-5.15.0-1087-gcpUpgrade linux-image-5.15.0-1080-ibmUpgrade linux-image-generic-64kUpgrade linux-image-aws-lts-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-xilinxUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-virtual-5.15Upgrade linux-image-azureUpgrade linux-image-5.15.0-1084-kvmUpgrade linux-image-kvm-5.15Upgrade linux-image-gke-6.8Upgrade linux-image-gkeop-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-kvmUpgrade linux-image-oracle-64kUpgrade linux-image-oracle-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-nvidia-5.15Upgrade linux-image-gkeUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-144-generic-lpaeUpgrade linux-image-5.15.0-1083-raspiUpgrade linux-image-realtime-5.15Upgrade linux-image-raspiUpgrade linux-image-oem-20.04bUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-oracle-5.15Upgrade linux-image-realtime-6.8.1Upgrade linux-image-gcp-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-oem-20.04cUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-generic-6.8Upgrade linux-image-azure-lts-22.04Upgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-5.15.0-144-generic-64kUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-gcpUpgrade linux-image-aws-fips-6.8 | Jun 26, 2025 | May 1, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2025 | May 1, 2025 |
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