In the Linux kernel, the following vulnerability has been resolved:
NFSD: NFSv4 file creation neglects setting ACL
An NFSv4 client that sets an ACL with a named principal during file creation retrieves the ACL afterwards, and finds that it is only a default ACL (based on the mode bits) and not the ACL that was requested during file creation. This violates RFC 8881 section 6.4.1.3: "the ACL attribute is set as given".
The issue occurs in nfsd_create_setattr(), which calls nfsd_attrs_valid() to determine whether to call nfsd_setattr(). However, nfsd_attrs_valid() checks only for iattr changes and security labels, but not POSIX ACLs. When only an ACL is present, the function returns false, nfsd_setattr() is skipped, and the POSIX ACL is never applied to the inode.
Subsequently, when the client retrieves the ACL, the server finds no POSIX ACL on the inode and returns one generated from the file's mode bits rather than returning the originally-specified ACL.
CVSS Details
- CVSS 3.1 Base Score: 8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-debuginfoUpgrade python-perf-debuginfoUpgrade kernelUpgrade bpftool-debuginfoUpgrade kernel-livepatch-5.10.248-247.988Upgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-headersUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel-livepatch-5.15.201-140.219Upgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-develUpgrade bpftoolUpgrade python3-perfUpgrade kernel-libbpf-staticUpgrade kernel6.12-libbpf-staticUpgrade kernel6.12-headersUpgrade kernel-livepatch-6.1.161-183.298Upgrade kernel-develUpgrade kernel-toolsUpgrade kernel-libbpf-develUpgrade kernel6.12-libbpfUpgrade kernel-tools-develUpgrade python3-perf-debuginfoUpgrade kernelUpgrade kernel6.12-toolsUpgrade perf6.12Upgrade kernel6.12-libbpf-develUpgrade kernel-debuginfo-common-x86_64Upgrade python3-perf6.12-debuginfoUpgrade kernel-modules-extra-commonUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-libbpfUpgrade bpftool6.12Upgrade kernel6.12-modules-extra-commonUpgrade perf-debuginfoUpgrade kernel-modules-extraUpgrade perfUpgrade kernel6.12-libbpf-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel-debuginfoUpgrade kernel-headersUpgrade kernel6.12-modules-extraUpgrade kernel6.12Upgrade kernel-livepatch-6.12.64-87.122Upgrade kernel-debuginfo-common-aarch64Upgrade perf6.12-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-libbpf-debuginfoUpgrade bpftool-debuginfoUpgrade python3-perf6.12 | Feb 20, 2026 | Jan 13, 2026 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Feb 11, 2026 | Feb 11, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Feb 24, 2026 | Jan 13, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 13, 2026 |
| Ubuntu | — | Upgrade linux-image-5.15.0-1110-azureUpgrade linux-image-oem-6.17Upgrade linux-image-oem-24.04dUpgrade linux-image-virtual-6.17Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-virtual-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1058-gcp-fipsUpgrade linux-image-gke-6.8Upgrade linux-image-awsUpgrade linux-image-gcp-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1024-nvidia-tegra-rtUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-6.17.0-1014-raspiUpgrade linux-image-6.17.0-22-genericUpgrade linux-image-aws-64k-6.8Upgrade linux-image-aws-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-raspi-6.8Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-5.15.0-1098-nvidia-lowlatencyUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gcp-6.17Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-azure-5.15Upgrade linux-image-raspiUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-5.15.0-1067-xilinx-zynqmpUpgrade linux-image-5.15.0-1098-intel-iotgUpgrade linux-image-6.8.0-1056-azureUpgrade linux-image-6.8.0-1024-nvidia-tegraUpgrade linux-image-realtimeUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-oracleUpgrade linux-image-5.15.0-1102-realtimeUpgrade linux-image-5.15.0-1103-gcpUpgrade linux-image-6.8.0-1059-azureUpgrade linux-image-aws-64k-6.17Upgrade linux-image-6.17.0-22-generic-64kUpgrade linux-image-oem-20.04Upgrade linux-image-azure-fips-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gke-64kUpgrade linux-image-lowlatency-5.15Upgrade linux-image-oracle-64kUpgrade linux-image-6.17.0-1011-oracleUpgrade linux-image-aws-fips-5.15Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-virtual-5.15Upgrade linux-image-6.8.0-1041-gkeopUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-nvidia-5.15Upgrade linux-image-oem-20.04cUpgrade linux-image-6.8.0-1054-nvidia-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-azureUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1054-nvidia-lowlatencyUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-1099-gkeUpgrade linux-image-raspi-5.15Upgrade linux-image-raspi-6.17Upgrade linux-image-generic-64k-5.15Upgrade linux-image-6.8.0-1056-raspiUpgrade linux-image-aws-fips-6.8Upgrade linux-image-gcpUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-oem-24.04aUpgrade linux-image-gcp-fipsUpgrade linux-image-gcp-64kUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-5.15.0-1103-awsUpgrade linux-image-gkeUpgrade linux-image-aws-64kUpgrade linux-image-5.15.0-1100-oracleUpgrade linux-image-5.15.0-173-genericUpgrade linux-image-generic-64k-6.17Upgrade linux-image-xilinx-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-5.15.0-1086-gkeopUpgrade linux-image-kvmUpgrade linux-image-5.15.0-1103-gcp-fipsUpgrade linux-image-gcp-5.15Upgrade linux-image-oracle-5.15Upgrade linux-image-5.15.0-173-lowlatency-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-realtime-6.17Upgrade linux-image-oracle-6.17Upgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-realtime-5.15Upgrade linux-image-5.15.0-173-fipsUpgrade linux-image-6.8.0-1054-nvidiaUpgrade linux-image-realtime-6.8.1Upgrade linux-image-6.17.0-1012-aws-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.17.0-1010-realtimeUpgrade linux-image-oem-20.04dUpgrade linux-image-nvidia-64kUpgrade linux-image-oem-24.04cUpgrade linux-image-xilinxUpgrade linux-image-6.17.0-1012-gcpUpgrade linux-image-6.8.1-1051-realtimeUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-fips-6.8Upgrade linux-image-5.15.0-1103-aws-64kUpgrade linux-image-6.8.0-117-lowlatencyUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-5.15.0-1094-intel-iot-realtimeUpgrade linux-image-oem-24.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1054-gke-64kUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-5.15.0-1109-azureUpgrade linux-image-5.15.0-1097-ibmUpgrade linux-image-5.15.0-1095-kvmUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oem-20.04bUpgrade linux-image-fips-5.15Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-generic-5.15Upgrade linux-image-5.15.0-1103-aws-fipsUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-azure-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-gke-5.15Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.0-117-lowlatency-64kUpgrade linux-image-6.8.0-1059-azure-fipsUpgrade linux-image-6.8.0-1058-gcpUpgrade linux-image-6.17.0-1013-azureUpgrade linux-image-6.17.0-1012-gcp-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-lowlatency-6.8Upgrade linux-image-azure-6.17Upgrade linux-image-gkeop-6.8Upgrade linux-image-fipsUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-genericUpgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidiaUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-1054-gkeUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-6.8.0-1055-aws-64kUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.8.0-117-genericUpgrade linux-image-6.8.0-116-fipsUpgrade linux-image-6.8.0-1055-ibmUpgrade linux-image-5.15.0-1044-nvidia-tegra-igx-rtUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-lowlatencyUpgrade linux-image-azure-lts-22.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-gkeopUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-6.8.0-117-generic-64kUpgrade linux-image-6.8.0-1054-nvidia-lowlatency-64kUpgrade linux-image-6.17.0-1011-oracle-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1058-gcp-64kUpgrade linux-image-6.8.0-1055-aws-fipsUpgrade linux-image-intel-iotgUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-5.15.0-1055-nvidia-tegraUpgrade linux-image-5.15.0-1044-nvidia-tegra-igxUpgrade linux-image-ibm-5.15Upgrade linux-image-ibmUpgrade linux-image-aws-64k-5.15Upgrade linux-image-5.15.0-1097-raspiUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1032-xilinxUpgrade linux-image-aws-6.8Upgrade linux-image-generic-lpae-5.15Upgrade linux-image-aws-6.17Upgrade linux-image-gcp-64k-6.17Upgrade linux-image-6.17.0-1020-oemUpgrade linux-image-6.17.0-1012-awsUpgrade linux-image-5.15.0-173-lowlatencyUpgrade linux-image-5.15.0-173-generic-lpaeUpgrade linux-image-5.15.0-1109-azure-fipsUpgrade linux-image-5.15.0-1098-nvidiaUpgrade linux-image-kvm-5.15Upgrade linux-image-intelUpgrade linux-image-ibm-6.8Upgrade linux-image-generic-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1055-awsUpgrade linux-image-virtualUpgrade linux-image-generic-64kUpgrade linux-image-generic-6.17Upgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-2045-raspi-realtimeUpgrade linux-image-5.15.0-173-generic-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-azure-lts-24.04Upgrade linux-image-5.15.0-1055-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-lowlatency-5.15 | Mar 17, 2026 | Jan 13, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jan 13, 2026 |
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