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.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-cross-headersUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-64kUpgrade kernel-coreUpgrade kernel-debug-modulesUpgrade kernel-zfcpdump-modulesUpgrade kernel-headersUpgrade kernel-rt-64k-debug-develUpgrade kernel-rt-modules-coreUpgrade kernel-rt-modules-extraUpgrade kernel-rt-64k-develUpgrade kernel-rt-debugUpgrade kernelUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-coreUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debugUpgrade kernel-64k-debug-coreUpgrade kernel-debug-develUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debug-coreUpgrade kernel-rt-64k-coreUpgrade rtlaUpgrade kernel-zfcpdumpUpgrade kernel-64k-coreUpgrade kernel-abi-stablelistsUpgrade kernel-64k-develUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-64k-modulesUpgrade kernel-rt-64k-modules-coreUpgrade kernel-64k-debugUpgrade kernel-rt-64k-debugUpgrade kernel-rt-64kUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-modulesUpgrade kernel-develUpgrade kernel-rtUpgrade kernel-zfcpdump-develUpgrade kernel-rt-debug-modules-coreUpgrade perfUpgrade kernel-devel-matchedUpgrade kernel-rt-coreUpgrade kernel-docUpgrade kernel-64k-debug-modules-coreUpgrade kernel-toolsUpgrade kernel-debug-devel-matchedUpgrade kernel-tools-libs-develUpgrade kernel-rt-64k-modulesUpgrade kernel-64k-debug-modulesUpgrade kernel-modules-coreUpgrade kernel-uki-virtUpgrade libperfUpgrade rvUpgrade kernel-64k-debug-develUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-64k-modules-extraUpgrade python3-perfUpgrade kernel-64k-modules-coreUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-64k-devel-matchedUpgrade kernel-64k-modules-extraUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-rt-modulesUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-debug-devel | Nov 20, 2025 | Nov 11, 2025 |
| Amazon Linux Ami 2 | — | Upgrade python-perf-debuginfoUpgrade kernel-livepatch-5.10.235-227.919Upgrade kernel-headersUpgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade kernel-livepatch-5.15.179-121.185Upgrade kernelUpgrade python-perfUpgrade kernel-develUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools | Apr 17, 2025 | Feb 27, 2025 |
| Amazon_linux_2023 | — | Upgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-modules-extraUpgrade kernel-develUpgrade kernel-tools-develUpgrade python3-perfUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-6.1.129-138.220Upgrade kernel-debuginfoUpgrade kernel-libbpfUpgrade kernel-toolsUpgrade perfUpgrade kernel-headersUpgrade kernelUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-develUpgrade kernel-modules-extra-commonUpgrade kernel-libbpf-staticUpgrade bpftool-debuginfo | 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-tools-libsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade bpftoolUpgrade kernel | Mar 10, 2026 | Mar 10, 2026 |
| Oracle_linux | — | Upgrade kernel | Nov 28, 2025 | Feb 27, 2025 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 9, 2025 | Feb 27, 2025 |
| Rocky_linux | — | Upgrade kernel-zfcpdump-debuginfoUpgrade kernel-rt-modules-extraUpgrade kernel-tools-debuginfoUpgrade kernel-debug-modules-extraUpgrade kernel-debug-uki-virtUpgrade python3-perf-debuginfoUpgrade kernel-debug-debuginfoUpgrade kernel-debug-modules-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-debugUpgrade kernel-tools-libs-develUpgrade kernel-tools-libsUpgrade kernel-modules-extra-matchedUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-modules-coreUpgrade kernel-rt-develUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-rt-debug-debuginfoUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-debug-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-devel-matchedUpgrade perfUpgrade kernel-debuginfoUpgrade kernel-debug-develUpgrade rvUpgrade kernel-toolsUpgrade kernel-zfcpdumpUpgrade perf-debuginfoUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rtUpgrade kernel-devel-matchedUpgrade kernel-zfcpdump-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-coreUpgrade python3-perfUpgrade kernel-rt-debuginfoUpgrade kernel-rt-debug-modules-extraUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-modulesUpgrade kernel-modulesUpgrade kernel-debugUpgrade libperfUpgrade kernel-zfcpdump-modules-coreUpgrade rtlaUpgrade libperf-debuginfoUpgrade kernel-uki-virtUpgrade kernel-rt-coreUpgrade kernel-modules-coreUpgrade kernel-develUpgrade kernel-debug-coreUpgrade kernel-debuginfo-common-s390xUpgrade kernel-rt-debug-devel | Feb 5, 2026 | Nov 21, 2025 |
| Suse | — | Upgrade ocfs2-kmp-defaultUpgrade kernel-sourceUpgrade kernel-kvmsmall-develUpgrade dtb-appleUpgrade reiserfs-kmp-rtUpgrade kselftests-kmp-64kbUpgrade kernel-devel-rtUpgrade dtb-socionextUpgrade dtb-renesasUpgrade reiserfs-kmp-defaultUpgrade kernel-azure-optionalUpgrade ocfs2-kmp-azureUpgrade gfs2-kmp-rtUpgrade dtb-broadcomUpgrade kernel-64kbUpgrade kernel-rt_debugUpgrade kernel-debugUpgrade kernel-macrosUpgrade ocfs2-kmp-rtUpgrade kernel-docs-htmlUpgrade dtb-amdUpgrade kernel-64kb-optionalUpgrade kernel-debug-develUpgrade dlm-kmp-azureUpgrade dtb-exynosUpgrade kernel-symsUpgrade kernel-default-develUpgrade kernel-default-optionalUpgrade dtb-apmUpgrade ocfs2-kmp-64kbUpgrade dtb-hisiliconUpgrade kernel-obs-qaUpgrade dtb-marvellUpgrade dtb-mediatekUpgrade kernel-default-extraUpgrade kernel-default-livepatch-develUpgrade cluster-md-kmp-defaultUpgrade dlm-kmp-defaultUpgrade kernel-default-baseUpgrade dtb-freescaleUpgrade kernel-kvmsmallUpgrade dlm-kmp-64kbUpgrade dtb-lgUpgrade gfs2-kmp-64kbUpgrade kernel-rt-develUpgrade kernel-zfcpdumpUpgrade kernel-64kb-develUpgrade kernel-source-azureUpgrade kernel-azure-extraUpgrade kernel-default-livepatchUpgrade dtb-amazonUpgrade dtb-xilinxUpgrade cluster-md-kmp-azureUpgrade kernel-devel-azureUpgrade cluster-md-kmp-rtUpgrade dtb-allwinnerUpgrade kernel-develUpgrade kernel-syms-rtUpgrade dlm-kmp-rtUpgrade kernel-64kb-extraUpgrade kernel-rt-vdsoUpgrade dtb-nvidiaUpgrade kselftests-kmp-defaultUpgrade kselftests-kmp-rtUpgrade kernel-rt-extraUpgrade dtb-rockchipUpgrade dtb-caviumUpgrade kernel-kvmsmall-vdsoUpgrade gfs2-kmp-azureUpgrade dtb-qcomUpgrade kernel-rtUpgrade dtb-armUpgrade dtb-amlogicUpgrade kselftests-kmp-azureUpgrade kernel-source-rtUpgrade kernel-rt_debug-vdsoUpgrade kernel-debug-vdsoUpgrade kernel-azureUpgrade dtb-alteraUpgrade kernel-azure-vdsoUpgrade kernel-azure-develUpgrade kernel-rt-optionalUpgrade kernel-syms-azureUpgrade kernel-source-vanillaUpgrade kernel-rt_debug-develUpgrade kernel-defaultUpgrade cluster-md-kmp-64kbUpgrade dtb-sprdUpgrade reiserfs-kmp-azureUpgrade reiserfs-kmp-64kbUpgrade kernel-rt-livepatch-develUpgrade kernel-obs-buildUpgrade kernel-default-base-rebuildUpgrade kernel-default-vdsoUpgrade gfs2-kmp-defaultUpgrade kernel-docs | Mar 13, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1036-gcpUpgrade linux-image-oem-24.04bUpgrade linux-image-gke-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1035-awsUpgrade linux-image-gkeopUpgrade linux-image-5.15.0-140-genericUpgrade linux-image-5.15.0-1084-aws-fipsUpgrade linux-image-nvidia-tegraUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.0-78-lowlatency-64kUpgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-1026-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-6.8.0-1036-gcp-64kUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.8.0-1034-azure-fdeUpgrade linux-image-oem-22.04Upgrade linux-image-intelUpgrade linux-image-6.8.0-1019-gkeopUpgrade linux-image-5.15.0-1084-awsUpgrade linux-image-5.15.0-140-generic-lpaeUpgrade linux-image-5.15.0-1078-nvidiaUpgrade linux-image-5.15.0-142-genericUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-5.15.0-142-generic-64kUpgrade linux-image-6.8.0-1033-ibmUpgrade linux-image-generic-6.8Upgrade linux-image-gcp-6.8Upgrade linux-image-virtualUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-intel-iotgUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1035-raspiUpgrade linux-image-generic-64kUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-oem-22.04bUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-genericUpgrade linux-image-oracleUpgrade linux-image-aws-64kUpgrade linux-image-5.15.0-1037-nvidia-tegraUpgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-oem-20.04Upgrade linux-image-azure-fde-6.8Upgrade linux-image-5.15.0-1078-nvidia-lowlatencyUpgrade linux-image-5.15.0-1080-kvmUpgrade linux-image-5.15.0-1076-ibmUpgrade linux-image-5.15.0-140-fipsUpgrade linux-image-6.8.0-1034-azureUpgrade linux-image-nvidiaUpgrade linux-image-6.11.0-1014-lowlatencyUpgrade linux-image-5.15.0-140-lowlatency-64kUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-oem-20.04dUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-26-genericUpgrade linux-image-6.11.0-1015-gcpUpgrade linux-image-azure-lts-22.04Upgrade linux-image-6.11.0-1016-oracleUpgrade linux-image-6.8.0-78-genericUpgrade linux-image-azure-6.8Upgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1032-oracle-64kUpgrade linux-image-5.15.0-1083-gcpUpgrade linux-image-oem-20.04cUpgrade linux-image-oem-22.04cUpgrade linux-image-oem-20.04bUpgrade linux-image-raspi-realtimeUpgrade linux-image-gcpUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-1035-nvidia-lowlatencyUpgrade linux-image-6.8.0-1035-nvidia-64kUpgrade linux-image-6.11.0-1013-raspiUpgrade linux-image-6.8.0-2028-raspi-realtimeUpgrade linux-image-6.8.0-78-generic-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-lpaeUpgrade linux-image-oracle-6.8Upgrade linux-image-5.15.0-1026-nvidia-tegra-igxUpgrade linux-image-5.15.0-1089-azureUpgrade linux-image-gcp-fipsUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1022-azure-nvidiaUpgrade linux-image-ibm-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-5.15.0-1079-intel-iotgUpgrade linux-image-5.15.0-1084-realtimeUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-gke-5.15Upgrade linux-image-aws-64k-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-6.11.0-1015-azure-fdeUpgrade linux-image-6.11.0-1015-azureUpgrade linux-image-lowlatency-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-fipsUpgrade linux-image-aws-6.8Upgrade linux-image-5.15.0-1037-nvidia-tegra-rtUpgrade linux-image-5.15.0-140-lowlatencyUpgrade linux-image-azure-cvmUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-aws-fipsUpgrade linux-image-generic-64k-6.8Upgrade linux-image-azureUpgrade linux-image-6.11.0-1010-realtimeUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-azure-fipsUpgrade linux-image-oem-22.04aUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1035-aws-64kUpgrade linux-image-5.15.0-1078-raspiUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-ibm-classicUpgrade linux-image-ibmUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-azure-nvidia-6.8Upgrade linux-image-5.15.0-1081-oracleUpgrade linux-image-azure-lts-24.04Upgrade linux-image-azure-nvidiaUpgrade linux-image-6.11.0-26-generic-64kUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-5.15.0-1083-gcp-fipsUpgrade linux-image-gkeop-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-5.15.0-1089-azure-fipsUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-5.15.0-1066-gkeopUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-lowlatencyUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-raspi-nolpaeUpgrade linux-image-6.8.0-78-lowlatencyUpgrade linux-image-gcp-64kUpgrade linux-image-virtual-6.8Upgrade linux-image-6.8.0-1032-oracleUpgrade linux-image-6.11.0-1014-lowlatency-64kUpgrade linux-image-raspi-6.8Upgrade linux-image-6.8.0-1035-nvidiaUpgrade linux-image-6.11.0-1014-awsUpgrade linux-image-awsUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-142-generic-lpaeUpgrade linux-image-6.8.0-1032-gkeUpgrade linux-image-6.8.0-1035-nvidia-lowlatency-64kUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.11.0-1015-gcp-64kUpgrade linux-image-5.15.0-140-generic-64kUpgrade linux-image-6.8.1-1030-realtimeUpgrade linux-image-realtime-6.8.1Upgrade linux-image-5.15.0-1077-intel-iot-realtimeUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.11.0-1022-oemUpgrade linux-image-6.11.0-1016-oracle-64kUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-5.15.0-1050-xilinx-zynqmpUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-aws-lts-22.04Upgrade linux-image-5.15.0-1081-gkeUpgrade linux-image-raspiUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-nvidia-64k-hwe-22.04 | 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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