In the Linux kernel, the following vulnerability has been resolved:
watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger
When the cpu5wdt module is removing, the origin code uses del_timer() to de-activate the timer. If the timer handler is running, del_timer() could not stop it and will return directly. If the port region is released by release_region() and then the timer handler cpu5wdt_trigger() calls outb() to write into the region that is released, the use-after-free bug will happen.
Change del_timer() to timer_shutdown_sync() in order that the timer handler could be finished before the port region is released.
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 |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 15, 2025 | Jun 21, 2024 |
| Suse | — | Upgrade kernel-azure-extraUpgrade gfs2-kmp-rtUpgrade kselftests-kmp-azureUpgrade ocfs2-kmp-defaultUpgrade kernel-source-azureUpgrade dtb-amazonUpgrade kernel-64kb-optionalUpgrade kernel-devel-azureUpgrade kernel-rt-vdsoUpgrade dtb-socionextUpgrade dlm-kmp-64kbUpgrade dtb-alteraUpgrade kernel-debug-develUpgrade kernel-sourceUpgrade kernel-source-rtUpgrade kernel-rt-extraUpgrade cluster-md-kmp-azureUpgrade dtb-marvellUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-kvmsmall-vdsoUpgrade dtb-appleUpgrade kernel-64kb-livepatch-develUpgrade kernel-64kbUpgrade dtb-hisiliconUpgrade kernel-rt-optionalUpgrade kernel-syms-azureUpgrade kernel-default-livepatchUpgrade dtb-freescaleUpgrade kernel-azureUpgrade kernel-obs-buildUpgrade gfs2-kmp-defaultUpgrade dtb-lgUpgrade dtb-caviumUpgrade gfs2-kmp-azureUpgrade kernel-azure-optionalUpgrade kernel-azure-baseUpgrade dtb-allwinnerUpgrade kernel-rt_debugUpgrade kernel-source-vanillaUpgrade gfs2-kmp-64kbUpgrade dtb-renesasUpgrade dtb-broadcomUpgrade kernel-rt_debug-develUpgrade reiserfs-kmp-64kbUpgrade kernel-default-vdsoUpgrade kernel-docs-htmlUpgrade kernel-zfcpdumpUpgrade kselftests-kmp-64kbUpgrade reiserfs-kmp-defaultUpgrade dtb-exynosUpgrade dtb-amdUpgrade kernel-azure-livepatch-develUpgrade ocfs2-kmp-64kbUpgrade kernel-azure-vdsoUpgrade kernel-kvmsmall-develUpgrade kernel-debugUpgrade kernel-debug-vdsoUpgrade kernel-default-develUpgrade kernel-default-manUpgrade kernel-rtUpgrade dtb-mediatekUpgrade kselftests-kmp-rtUpgrade kernel-rt_debug-livepatch-develUpgrade cluster-md-kmp-64kbUpgrade kernel-syms-rtUpgrade kernel-default-livepatch-develUpgrade kernel-default-base-rebuildUpgrade cluster-md-kmp-rtUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-defaultUpgrade dtb-apmUpgrade dtb-qcomUpgrade dtb-armUpgrade dtb-nvidiaUpgrade ocfs2-kmp-azureUpgrade kernel-default-optionalUpgrade kernel-rt_debug-vdsoUpgrade kernel-azure-develUpgrade dtb-xilinxUpgrade dlm-kmp-defaultUpgrade ocfs2-kmp-rtUpgrade kernel-rt-livepatchUpgrade kernel-rt-develUpgrade kernel-macrosUpgrade kernel-docsUpgrade kernel-obs-qaUpgrade kernel-devel-rtUpgrade dlm-kmp-rtUpgrade kernel-rt-livepatch-develUpgrade kernel-debug-livepatch-develUpgrade kernel-64kb-develUpgrade dtb-amlogicUpgrade cluster-md-kmp-defaultUpgrade kernel-default-extraUpgrade dlm-kmp-azureUpgrade reiserfs-kmp-rtUpgrade dtb-sprdUpgrade kernel-symsUpgrade kernel-kvmsmallUpgrade kernel-develUpgrade kernel-default-baseUpgrade kernel-defaultUpgrade kernel-64kb-extraUpgrade dtb-rockchip | Jul 10, 2024 | Jun 21, 2024 |
| Ubuntu | — | Upgrade linux-image-6.8.0-44-lowlatencyUpgrade linux-image-genericUpgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1013-nvidiaUpgrade linux-image-6.8.0-1015-awsUpgrade linux-image-oracle-lts-18.04Upgrade linux-image-5.15.0-1064-ibmUpgrade linux-image-generic-hwe-16.04Upgrade linux-image-4.15.0-1174-awsUpgrade linux-image-5.15.0-1068-gkeUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1013-nvidia-lowlatency-64kUpgrade linux-image-4.15.0-1157-kvmUpgrade linux-image-5.15.0-124-lowlatency-64kUpgrade linux-image-gkeop-5.4Upgrade linux-image-oem-22.04Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1010-gkeUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-intelUpgrade linux-image-4.4.0-260-genericUpgrade linux-image-oem-22.04cUpgrade linux-image-6.8.0-1014-gcpUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-4.4.0-260-lowlatencyUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.8.0-45-generic-64kUpgrade linux-image-azure-lts-18.04Upgrade linux-image-virtual-hwe-18.04Upgrade linux-image-5.4.0-1118-raspiUpgrade linux-image-4.4.0-1137-awsUpgrade linux-image-6.8.0-1012-oracleUpgrade linux-image-virtualUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-44-lowlatency-64kUpgrade linux-image-5.15.0-1074-azure-fdeUpgrade linux-image-5.4.0-1044-iotUpgrade linux-image-generic-lpaeUpgrade linux-image-5.15.0-1068-kvmUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1014-azure-fdeUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-intel-iotgUpgrade linux-image-aws-lts-18.04Upgrade linux-image-azure-lts-22.04Upgrade linux-image-generic-lts-xenialUpgrade linux-image-oem-osp1Upgrade linux-image-6.8.0-1012-ibmUpgrade linux-image-5.15.0-1064-raspiUpgrade linux-image-gkeop-5.15Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oracleUpgrade linux-image-generic-64kUpgrade linux-image-nvidia-6.8Upgrade linux-image-4.15.0-1136-oracleUpgrade linux-image-6.8.0-1011-raspiUpgrade linux-image-4.15.0-1182-azureUpgrade linux-image-5.4.0-1101-gkeopUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-oem-20.04bUpgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-virtual-lts-xenialUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-oemUpgrade linux-image-raspi-hwe-18.04Upgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-1013-nvidia-lowlatencyUpgrade linux-image-5.15.0-124-generic-64kUpgrade linux-image-5.15.0-1070-gcpUpgrade linux-image-oem-20.04Upgrade linux-image-bluefieldUpgrade linux-image-4.4.0-1138-kvmUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidiaUpgrade linux-image-5.4.0-198-genericUpgrade linux-image-lowlatency-64kUpgrade linux-image-5.4.0-1134-awsUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-awsUpgrade linux-image-5.4.0-198-generic-lpaeUpgrade linux-image-gcpUpgrade linux-image-raspiUpgrade linux-image-6.8.0-44-generic-64kUpgrade linux-image-5.15.0-1054-gkeopUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1012-oracle-64kUpgrade linux-image-5.4.0-1081-ibmUpgrade linux-image-5.4.0-1138-gcpUpgrade linux-image-gke-5.15Upgrade linux-image-ibmUpgrade linux-image-5.4.0-1094-bluefieldUpgrade linux-image-5.4.0-1133-oracleUpgrade linux-image-5.15.0-1071-awsUpgrade linux-image-5.15.0-1066-nvidiaUpgrade linux-image-ibm-classicUpgrade linux-image-nvidia-64kUpgrade linux-image-4.15.0-230-lowlatencyUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-virtual-hwe-16.04Upgrade linux-image-5.15.0-1074-azureUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-5.15.0-1069-oracleUpgrade linux-image-azure-cvmUpgrade linux-image-5.4.0-198-lowlatencyUpgrade linux-image-6.8.0-44-genericUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-aws-lts-20.04Upgrade linux-image-6.8.0-1014-azureUpgrade linux-image-5.4.0-1139-azureUpgrade linux-image-6.8.0-45-genericUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-azure-lts-20.04Upgrade linux-image-5.15.0-124-generic-lpaeUpgrade linux-image-4.15.0-1167-gcpUpgrade linux-image-5.15.0-1037-xilinx-zynqmpUpgrade linux-image-azureUpgrade linux-image-lowlatencyUpgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oem-20.04dUpgrade linux-image-5.4.0-1053-xilinx-zynqmpUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-5.15.0-124-lowlatencyUpgrade linux-image-5.4.0-1122-kvmUpgrade linux-image-oem-22.04aUpgrade linux-image-5.15.0-124-genericUpgrade linux-image-6.8.0-1012-oemUpgrade linux-image-azure-fdeUpgrade linux-image-4.4.0-1175-awsUpgrade linux-image-kvmUpgrade linux-image-oracle-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-raspi2Upgrade linux-image-raspi-nolpaeUpgrade linux-image-5.15.0-1066-nvidia-lowlatencyUpgrade linux-image-oem-22.04bUpgrade linux-image-5.15.0-1066-intel-iotgUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-4.15.0-230-genericUpgrade linux-image-aws-hweUpgrade linux-image-6.8.0-1013-nvidia-64k | Sep 12, 2024 | Jun 21, 2024 |
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