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In the Linux kernel, the following vulnerability has been resolved:
NFSD: fix hang in nfsd4_shutdown_callback
If nfs4_client is in courtesy state then there is no point to send the callback. This causes nfsd4_shutdown_callback to hang since cl_cb_inflight is not 0. This hang lasts about 15 minutes until TCP notifies NFSD that the connection was dropped.
This patch modifies nfsd4_run_cb_work to skip the RPC call if nfs4_client is in courtesy state.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-64k-coreUpgrade kernel-debug-develUpgrade kernel-64k-debugUpgrade kernel-headersUpgrade kernel-rt-modules-extraUpgrade kernel-debug-coreUpgrade kernel-rt-debugUpgrade kernel-rt-64k-develUpgrade kernel-zfcpdumpUpgrade kernel-modules-extraUpgrade kernel-rt-64k-modules-coreUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-debug-modules-extraUpgrade kernel-64kUpgrade kernel-rt-64kUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-debugUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-64k-modulesUpgrade kernel-rt-debug-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-develUpgrade kernel-64k-develUpgrade kernel-debug-uki-virtUpgrade rtlaUpgrade kernelUpgrade kernel-rt-64k-debug-develUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-modules-coreUpgrade kernel-cross-headersUpgrade kernel-64k-debug-coreUpgrade kernel-abi-stablelistsUpgrade kernel-debug-modulesUpgrade kernel-debug-modules-coreUpgrade kernel-rt-64k-debugUpgrade kernel-rt-64k-coreUpgrade kernel-coreUpgrade kernel-toolsUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-modules-coreUpgrade kernel-64k-modules-coreUpgrade kernel-rt-64k-modules-extraUpgrade kernel-modulesUpgrade kernel-modules-coreUpgrade kernel-rt-64k-debug-coreUpgrade kernel-docUpgrade kernel-rtUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-64k-debug-develUpgrade kernel-uki-virt-addonsUpgrade kernel-develUpgrade kernel-rt-debug-develUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-64k-modules-extraUpgrade kernel-64k-debug-modulesUpgrade kernel-zfcpdump-develUpgrade kernel-64k-devel-matchedUpgrade kernel-uki-virtUpgrade libperfUpgrade python3-perfUpgrade kernel-devel-matchedUpgrade rvUpgrade kernel-rt-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-64k-debug-modules-coreUpgrade perfUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-64k-modulesUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-modules | Nov 20, 2025 | Nov 11, 2025 |
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.10.235-227.919Upgrade kernel-headersUpgrade perfUpgrade kernel-livepatch-5.15.179-121.185Upgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade kernel-toolsUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade python-perfUpgrade kernel | Apr 17, 2025 | Feb 27, 2025 |
| Amazon_linux_2023 | — | Upgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernel-libbpfUpgrade kernel-develUpgrade python3-perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-modules-extraUpgrade python3-perfUpgrade kernel-livepatch-6.1.129-138.220Upgrade kernel-libbpf-staticUpgrade kernel-libbpf-develUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-modules-extra-common | Jun 11, 2025 | Feb 27, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Mar 17, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftoolUpgrade python3-perfUpgrade kernel | Mar 10, 2026 | Mar 10, 2026 |
| Oracle_linux | — | Upgrade kernel | Nov 28, 2025 | Feb 27, 2025 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | Jul 9, 2025 | Feb 27, 2025 |
| Rocky_linux | — | Upgrade kernel-debug-uki-virtUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debugUpgrade kernel-tools-debuginfoUpgrade kernel-tools-libs-develUpgrade kernel-modules-extraUpgrade kernel-rt-debug-debuginfoUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-debug-coreUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-debug-modulesUpgrade kernel-debug-debuginfoUpgrade kernel-debug-modules-coreUpgrade python3-perf-debuginfoUpgrade kernel-rt-develUpgrade kernel-debug-modules-extraUpgrade kernelUpgrade kernel-zfcpdump-coreUpgrade kernel-tools-libsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-modules-extra-matchedUpgrade kernel-rt-modules-coreUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-rt-coreUpgrade libperf-debuginfoUpgrade kernel-devel-matchedUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade perfUpgrade kernel-zfcpdumpUpgrade kernel-debug-develUpgrade kernel-debug-devel-matchedUpgrade kernel-debuginfo-common-s390xUpgrade kernel-rt-debug-develUpgrade kernel-develUpgrade rtlaUpgrade kernel-uki-virtUpgrade kernel-rt-debug-modules-extraUpgrade kernel-modulesUpgrade kernel-debugUpgrade libperfUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-modulesUpgrade python3-perfUpgrade kernel-coreUpgrade kernel-zfcpdump-develUpgrade kernel-modules-coreUpgrade kernel-debuginfoUpgrade kernel-debug-coreUpgrade rvUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debuginfoUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt | Feb 5, 2026 | Nov 21, 2025 |
| Suse | — | Upgrade gfs2-kmp-azureUpgrade kernel-syms-azureUpgrade kernel-defaultUpgrade kernel-rt_debug-develUpgrade cluster-md-kmp-64kbUpgrade kernel-azure-develUpgrade kernel-azure-vdsoUpgrade kernel-rt-optionalUpgrade gfs2-kmp-defaultUpgrade kernel-default-base-rebuildUpgrade reiserfs-kmp-azureUpgrade dlm-kmp-rtUpgrade kernel-rt-livepatch-develUpgrade reiserfs-kmp-64kbUpgrade dtb-alteraUpgrade kernel-syms-rtUpgrade kselftests-kmp-defaultUpgrade dtb-caviumUpgrade kselftests-kmp-rtUpgrade kernel-docsUpgrade kernel-rt-vdsoUpgrade kernel-rt-extraUpgrade dtb-rockchipUpgrade kernel-default-vdsoUpgrade dtb-sprdUpgrade kernel-rt_debug-vdsoUpgrade dtb-nvidiaUpgrade kernel-debug-vdsoUpgrade kernel-64kb-extraUpgrade kernel-obs-buildUpgrade kernel-kvmsmall-vdsoUpgrade kernel-source-rtUpgrade dtb-qcomUpgrade kselftests-kmp-azureUpgrade kernel-source-vanillaUpgrade kernel-rtUpgrade dtb-amlogicUpgrade dtb-armUpgrade kernel-azureUpgrade dtb-renesasUpgrade kernel-kvmsmall-develUpgrade dtb-hisiliconUpgrade ocfs2-kmp-64kbUpgrade kernel-rt_debugUpgrade kernel-devel-rtUpgrade gfs2-kmp-rtUpgrade dtb-socionextUpgrade dtb-appleUpgrade kernel-rt-develUpgrade kernel-azure-optionalUpgrade dtb-allwinnerUpgrade kernel-default-baseUpgrade kernel-macrosUpgrade kernel-docs-htmlUpgrade kernel-devel-azureUpgrade kernel-develUpgrade kernel-default-optionalUpgrade kernel-64kb-optionalUpgrade kernel-default-develUpgrade kernel-debug-develUpgrade dtb-apmUpgrade ocfs2-kmp-rtUpgrade dlm-kmp-azureUpgrade dtb-amazonUpgrade cluster-md-kmp-defaultUpgrade kernel-zfcpdumpUpgrade kernel-source-azureUpgrade kernel-default-livepatchUpgrade dtb-xilinxUpgrade dlm-kmp-defaultUpgrade dtb-amdUpgrade kernel-default-extraUpgrade kernel-default-livepatch-develUpgrade gfs2-kmp-64kbUpgrade dtb-mediatekUpgrade dtb-marvellUpgrade kernel-obs-qaUpgrade reiserfs-kmp-defaultUpgrade kernel-64kbUpgrade dtb-broadcomUpgrade dlm-kmp-64kbUpgrade cluster-md-kmp-rtUpgrade cluster-md-kmp-azureUpgrade kernel-debugUpgrade kernel-azure-extraUpgrade kernel-64kb-develUpgrade dtb-lgUpgrade dtb-freescaleUpgrade kernel-symsUpgrade kernel-kvmsmallUpgrade kselftests-kmp-64kbUpgrade kernel-sourceUpgrade dtb-exynosUpgrade reiserfs-kmp-rtUpgrade ocfs2-kmp-defaultUpgrade ocfs2-kmp-azure | Mar 13, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-image-gcp-fipsUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-generic-lpaeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-azure-fdeUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-6.11.0-26-generic-64kUpgrade linux-image-ibm-6.8Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-1081-oracleUpgrade linux-image-azure-cvmUpgrade linux-image-5.15.0-1037-nvidia-tegra-rtUpgrade linux-image-generic-64k-6.8Upgrade linux-image-aws-64k-6.8Upgrade linux-image-5.15.0-1077-intel-iot-realtimeUpgrade linux-image-5.15.0-1081-gkeUpgrade linux-image-azureUpgrade linux-image-fipsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-aws-6.8Upgrade linux-image-lowlatency-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-aws-lts-22.04Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-1032-oracleUpgrade linux-image-6.11.0-1015-azureUpgrade linux-image-6.8.1-1030-realtimeUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-5.15.0-140-generic-64kUpgrade linux-image-6.8.0-1032-gkeUpgrade linux-image-6.8.0-78-lowlatencyUpgrade linux-image-6.11.0-1022-oemUpgrade linux-image-6.8.0-1022-azure-nvidiaUpgrade linux-image-lowlatencyUpgrade linux-image-5.15.0-1089-azure-fipsUpgrade linux-image-ibmUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.11.0-1015-azure-fdeUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-5.15.0-1078-raspiUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-awsUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-ibm-classicUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-raspiUpgrade linux-image-6.11.0-1015-gcp-64kUpgrade linux-image-6.11.0-1014-awsUpgrade linux-image-6.8.0-1035-nvidia-lowlatency-64kUpgrade linux-image-gke-5.15Upgrade linux-image-6.11.0-1016-oracle-64kUpgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-1079-intel-iotgUpgrade linux-image-5.15.0-1084-realtimeUpgrade linux-image-5.15.0-142-generic-lpaeUpgrade linux-image-raspi-6.8Upgrade linux-image-raspi-nolpaeUpgrade linux-image-5.15.0-1089-azureUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-azure-nvidiaUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-5.15.0-1026-nvidia-tegra-igxUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-nvidia-6.8Upgrade linux-image-6.8.0-1035-nvidiaUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.0-1035-aws-64kUpgrade linux-image-5.15.0-1066-gkeopUpgrade linux-image-aws-fipsUpgrade linux-image-kvmUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-oracle-6.8Upgrade linux-image-oem-22.04aUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.11.0-1010-realtimeUpgrade linux-image-virtual-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-5.15.0-140-lowlatencyUpgrade linux-image-gcp-64kUpgrade linux-image-5.15.0-1050-xilinx-zynqmpUpgrade linux-image-5.15.0-1083-gcp-fipsUpgrade linux-image-6.11.0-1014-lowlatency-64kUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.11.0-1014-lowlatencyUpgrade linux-image-5.15.0-1078-nvidia-lowlatencyUpgrade linux-image-oem-22.04bUpgrade linux-image-azure-lts-22.04Upgrade linux-image-5.15.0-1083-gcpUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.11.0-1015-gcpUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-1026-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-tegraUpgrade linux-image-oracleUpgrade linux-image-oem-20.04cUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-1016-oracleUpgrade linux-image-azure-fde-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-oem-20.04dUpgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-1034-azure-fdeUpgrade linux-image-5.15.0-140-generic-lpaeUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.8.0-1036-gcpUpgrade linux-image-gcp-6.8Upgrade linux-image-gkeUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-intelUpgrade linux-image-5.15.0-1037-nvidia-tegraUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-genericUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-78-genericUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.8.0-1032-oracle-64kUpgrade linux-image-gkeopUpgrade linux-image-6.8.0-1035-awsUpgrade linux-image-5.15.0-140-genericUpgrade linux-image-gke-6.8Upgrade linux-image-5.15.0-1076-ibmUpgrade linux-image-6.8.0-1019-gkeopUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-1035-raspiUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-virtualUpgrade linux-image-5.15.0-142-generic-64kUpgrade linux-image-generic-64kUpgrade linux-image-5.15.0-1078-nvidiaUpgrade linux-image-5.15.0-1084-awsUpgrade linux-image-5.15.0-142-genericUpgrade linux-image-6.8.0-1033-ibmUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.0-1035-nvidia-lowlatencyUpgrade linux-image-5.15.0-1080-kvmUpgrade linux-image-5.15.0-140-fipsUpgrade linux-image-5.15.0-140-lowlatency-64kUpgrade linux-image-nvidiaUpgrade linux-image-oem-20.04Upgrade linux-image-6.11.0-26-genericUpgrade linux-image-6.8.0-1035-nvidia-64kUpgrade linux-image-6.8.0-1034-azureUpgrade linux-image-aws-64kUpgrade linux-image-realtimeUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-gcpUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-78-generic-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-gkeop-5.15Upgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-6.8.0-1036-gcp-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-5.15.0-1084-aws-fipsUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.0-78-lowlatency-64kUpgrade linux-image-6.8.0-2028-raspi-realtimeUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-6.11.0-1013-raspi | May 20, 2025 | Feb 27, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Feb 27, 2025 |
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