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In the Linux kernel, the following vulnerability has been resolved:
io_uring/eventfd: ensure io_eventfd_signal() defers another RCU period
io_eventfd_do_signal() is invoked from an RCU callback, but when dropping the reference to the io_ev_fd, it calls io_eventfd_free() directly if the refcount drops to zero. This isn't correct, as any potential freeing of the io_ev_fd should be deferred another RCU grace period.
Just call io_eventfd_put() rather than open-code the dec-and-test and free, which will correctly defer it another RCU grace period.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Feb 10, 2025 | Jan 20, 2025 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernel | Jan 27, 2026 | Jan 20, 2025 |
| Rocky_linux | — | Upgrade kernel-modules-extra-matchedUpgrade kernel-modules-extraUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-tools-libsUpgrade kernel-rt-debug-coreUpgrade python3-perf-debuginfoUpgrade rvUpgrade kernel-uki-virtUpgrade kernel-debug-coreUpgrade kernel-debug-modulesUpgrade kernel-debug-debuginfoUpgrade kernel-debug-modules-coreUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-modulesUpgrade kernel-modules-coreUpgrade kernel-rt-develUpgrade kernel-rt-debug-modules-coreUpgrade kernel-debuginfo-common-s390xUpgrade kernel-zfcpdumpUpgrade kernel-rt-modulesUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-debug-develUpgrade kernel-debugUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-debuginfoUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-modules-coreUpgrade kernel-tools-debuginfoUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-coreUpgrade kernel-rtUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-debug-modulesUpgrade kernel-toolsUpgrade kernel-rt-debuginfoUpgrade kernel-debug-develUpgrade kernel-devel-matchedUpgrade kernel-rt-debugUpgrade perfUpgrade kernel-debug-uki-virtUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-debuginfoUpgrade rtlaUpgrade perf-debuginfoUpgrade python3-perfUpgrade kernel-debuginfoUpgrade kernel-rt-modules-extraUpgrade kernel-rt-coreUpgrade libperfUpgrade kernel-develUpgrade libperf-debuginfoUpgrade kernel-zfcpdump-develUpgrade kernel | Feb 5, 2026 | Nov 27, 2025 |
| Suse | — | Upgrade kernel-kvmsmall-vdsoUpgrade gfs2-kmp-64kbUpgrade dtb-appleUpgrade kernel-rt_debug-vdsoUpgrade kernel-default-livepatchUpgrade kernel-source-vanillaUpgrade cluster-md-kmp-64kbUpgrade kernel-rt_debugUpgrade reiserfs-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade kernel-azure-extraUpgrade kernel-default-livepatch-develUpgrade dlm-kmp-defaultUpgrade dtb-apmUpgrade dtb-renesasUpgrade kernel-rt-optionalUpgrade dtb-amlogicUpgrade kernel-zfcpdumpUpgrade kernel-symsUpgrade reiserfs-kmp-64kbUpgrade kernel-default-develUpgrade dtb-amdUpgrade kernel-docs-htmlUpgrade kernel-64kb-optionalUpgrade dtb-freescaleUpgrade dtb-broadcomUpgrade kernel-obs-qaUpgrade kernel-64kbUpgrade reiserfs-kmp-rtUpgrade dtb-hisiliconUpgrade kernel-macrosUpgrade kernel-source-rtUpgrade ocfs2-kmp-azureUpgrade kernel-64kb-extraUpgrade cluster-md-kmp-defaultUpgrade dlm-kmp-azureUpgrade kernel-debugUpgrade kernel-default-extraUpgrade kselftests-kmp-defaultUpgrade kselftests-kmp-rtUpgrade kselftests-kmp-azureUpgrade kernel-azure-vdsoUpgrade kernel-default-baseUpgrade kernel-rt-vdsoUpgrade kernel-rt_debug-develUpgrade gfs2-kmp-defaultUpgrade dtb-amazonUpgrade dtb-sprdUpgrade dtb-socionextUpgrade kernel-debug-develUpgrade kernel-syms-rtUpgrade dlm-kmp-rtUpgrade kernel-defaultUpgrade ocfs2-kmp-64kbUpgrade kernel-azureUpgrade ocfs2-kmp-rtUpgrade dtb-marvellUpgrade kernel-docsUpgrade dtb-alteraUpgrade dlm-kmp-64kbUpgrade cluster-md-kmp-azureUpgrade dtb-qcomUpgrade dtb-nvidiaUpgrade kernel-syms-azureUpgrade kernel-rtUpgrade kernel-default-vdsoUpgrade gfs2-kmp-azureUpgrade kernel-devel-azureUpgrade kernel-kvmsmallUpgrade dtb-rockchipUpgrade kernel-default-optionalUpgrade dtb-allwinnerUpgrade cluster-md-kmp-rtUpgrade kselftests-kmp-64kbUpgrade gfs2-kmp-rtUpgrade kernel-sourceUpgrade kernel-default-base-rebuildUpgrade kernel-source-azureUpgrade kernel-develUpgrade dtb-mediatekUpgrade dtb-armUpgrade reiserfs-kmp-azureUpgrade dtb-lgUpgrade kernel-obs-buildUpgrade kernel-64kb-develUpgrade kernel-kvmsmall-develUpgrade kernel-azure-develUpgrade dtb-caviumUpgrade kernel-rt-develUpgrade dtb-exynosUpgrade kernel-azure-optionalUpgrade kernel-debug-vdsoUpgrade ocfs2-kmp-defaultUpgrade kernel-rt-extraUpgrade kernel-devel-rtUpgrade dtb-xilinx | Feb 12, 2025 | Jan 20, 2025 |
| Ubuntu | — | Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.11.0-1013-oracle-64kUpgrade linux-image-raspi-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1030-gcp-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-60-generic-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gkeopUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1029-azure-fdeUpgrade linux-image-oem-24.04aUpgrade linux-image-virtualUpgrade linux-image-oem-24.04bUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.11.0-1010-raspiUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.11.0-1011-lowlatency-64kUpgrade linux-image-6.8.0-1028-nvidia-lowlatencyUpgrade linux-image-6.8.0-1029-azureUpgrade linux-image-6.8.0-1026-oracleUpgrade linux-image-6.8.0-1028-nvidiaUpgrade linux-image-awsUpgrade linux-image-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1028-nvidia-lowlatency-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-60-lowlatency-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1030-gcpUpgrade linux-image-gcpUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1028-oemUpgrade linux-image-oem-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-genericUpgrade linux-image-6.11.0-1011-awsUpgrade linux-image-oracleUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-ibmUpgrade linux-image-6.8.0-60-lowlatencyUpgrade linux-image-6.8.0-1028-nvidia-64kUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.8.0-1026-oracle-64kUpgrade linux-image-6.11.0-21-generic-64kUpgrade linux-image-6.8.0-1016-azure-nvidiaUpgrade linux-image-6.8.0-1026-ibmUpgrade linux-image-6.8.0-1012-gkeopUpgrade linux-image-6.8.0-1025-gkeUpgrade linux-image-6.11.0-1017-oemUpgrade linux-image-6.11.0-21-genericUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.11.0-1011-gcp-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-kvmUpgrade linux-image-nvidia-6.8Upgrade linux-image-azureUpgrade linux-image-6.8.1-1022-realtimeUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.11.0-1011-gcpUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-azure-nvidiaUpgrade linux-image-6.11.0-1011-lowlatencyUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.11.0-1012-azureUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-raspiUpgrade linux-image-6.11.0-1013-oracleUpgrade linux-image-6.11.0-1007-realtimeUpgrade linux-image-oem-22.04cUpgrade linux-image-lowlatencyUpgrade linux-image-azure-lts-24.04Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1029-awsUpgrade linux-image-aws-lts-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-generic-64kUpgrade linux-image-lowlatency-64kUpgrade linux-image-azure-fdeUpgrade linux-image-nvidiaUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-60-genericUpgrade linux-image-6.11.0-1012-azure-fdeUpgrade linux-image-oem-22.04 | Mar 28, 2025 | Jan 20, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2025 | Jan 20, 2025 |
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