Description
A use-after-free flaw was found in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c in the NFS filesystem in the Linux Kernel. This issue could allow a local attacker to crash the system or it may lead to a kernel information leak problem.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux Kernel | Kernel 6.2 RC5 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 6.1.11-1 | — |
| Debian 13 | linux | 6.1.11-1 | — |
| Debian 12 | linux | 6.1.11-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1015.17 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-70.77 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1034.38 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1036.43 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-azure-5.19 | 5.19.0-1026.29~22.04.1 | USN-6079-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1036.43.1 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1032.40 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1031.36 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1018.23 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-hwe-5.19 | 5.19.0-42.43~22.04.1 | USN-6096-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1028.31 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1028.33 | USN-6057-1 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-5.19 | 5.19.0-1024.25~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1023.23 | — |
| Ubuntu 22.04 LTS | linux-oem-6.1 | 6.1.0-1008.8 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1033.39 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1027.29 | USN-6025-1 |
| Ubuntu 22.04 LTS | linux-riscv +3 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1034.38~20.04.1 | USN-6025-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1036.43~20.04.1 | USN-6025-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1036.43~20.04.1.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1032.40~20.04.1 | USN-6025-1 |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1031.36~20.04.1 | USN-6025-1 |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1018.23~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-70.77~20.04.1 | USN-6040-1, USN-6025-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1030.35~20.04.1 | USN-6134-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1033.39~20.04.1 | USN-6025-1 |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1031.35~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1024.29 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1036.39 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.2.0-362.8.1.el9_3 | RHSA-2023:6583 |
| RHEL 9 | rv +64 | 5.14.0-362.8.1.el9_3 | RHSA-2023:6583 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.2 E4S | bpftool | 7.0.0-284.124.1.el9_2 | RHSA-2025:10671 |
| RHEL 9.2 E4S | kernel-rt +14 | 5.14.0-284.124.1.rt14.409.el9_2 | RHSA-2025:10675 |
| RHEL 9.2 E4S | perf +47 | 5.14.0-284.124.1.el9_2 | RHSA-2025:10671 |
| RHEL 9.0 E4S | kernel-rt +12 | 5.14.0-70.136.1.rt21.208.el9_0 | RHSA-2025:10193 |
| RHEL 9.0 E4S | perf +28 | 5.14.0-70.136.1.el9_0 | RHSA-2025:10174 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.7.1 | SUSE-SU-2025:1241-1, SUSE-SU-2023:2871-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.3.1 | SUSE-SU-2023:2646-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.7.1.150500.6.2.5 | SUSE-SU-2025:1241-1, SUSE-SU-2023:2871-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.60.1 | SUSE-SU-2025:1195-1, SUSE-SU-2023:1897-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.43.1 | SUSE-SU-2023:1802-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.60.1.150400.24.24.3 | SUSE-SU-2025:1195-1, SUSE-SU-2023:1897-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.91.1 | SUSE-SU-2025:1176-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.60.1 | SUSE-SU-2025:1195-1, SUSE-SU-2023:1897-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.60.1.150400.24.24.3 | SUSE-SU-2025:1195-1, SUSE-SU-2023:1897-1 |
| SLE Micro 5.4 | kernel-rt | 5.14.21-150400.15.23.1 | SUSE-SU-2025:1183-1, SUSE-SU-2023:1992-1 |
| SLE Micro 5.4 | kernel-source-rt | 5.14.21-150400.15.115.1 | SUSE-SU-2025:1183-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.60.1 | SUSE-SU-2025:1195-1, SUSE-SU-2023:1897-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.60.1.150400.24.24.3 | SUSE-SU-2025:1195-1, SUSE-SU-2023:1897-1 |
| SLE Micro 5.3 | kernel-rt | 5.14.21-150400.15.23.1 | SUSE-SU-2025:1183-1, SUSE-SU-2023:1992-1 |
| SLE Micro 5.3 | kernel-source-rt | 5.14.21-150400.15.115.1 | SUSE-SU-2025:1183-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.7.1 | SUSE-SU-2025:1241-1, SUSE-SU-2023:2871-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_1 | 1-150500.11.5.1 | SUSE-SU-2023:2809-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_1 | 1-150500.11.7.1 | SUSE-SU-2023:2871-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_25 | 1-150500.11.3.1 | SUSE-SU-2025:1241-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.60.1 | SUSE-SU-2025:1195-1, SUSE-SU-2023:1897-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4-RT_Update_6 | 1-150400.1.3.3 | SUSE-SU-2023:1992-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_0 | 13-150400.13.2 | SUSE-SU-2023:2035-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_10 +1 | 2-150400.2.2 | SUSE-SU-2023:2032-1, SUSE-SU-2023:1978-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_11 | 1-150400.9.3.2 | SUSE-SU-2023:1897-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_2 | 10-150400.2.2 | SUSE-SU-2023:2043-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_39 | 1-150400.9.3.1 | SUSE-SU-2025:1195-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_6 +1 | 5-150400.2.2 | SUSE-SU-2023:2031-1, SUSE-SU-2023:1975-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_8 +1 | 3-150400.2.2 | SUSE-SU-2023:2055-1, SUSE-SU-2023:1977-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.5.1 | SUSE-SU-2023:2809-1 |
| SUSE Real Time Module 15 SP4 | kernel-rt +3 | 5.14.21-150400.15.23.1 | SUSE-SU-2023:1992-1 |
| SUSE Manager Server 4.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Server 4.3 | kernel-syms +3 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Proxy 4.3 | kernel-default-base | 5.14.21-150400.24.161.1.150400.24.80.1 | SUSE-SU-2025:1195-1 |
| SUSE Manager Proxy 4.3 | kernel-syms +2 | 5.14.21-150400.24.161.1 | SUSE-SU-2025:1195-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | dtb-aarch64 +10 | 5.14.21-150500.55.7.1 | SUSE-SU-2023:2871-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.3.1 | SUSE-SU-2023:2646-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.7.1.150500.6.2.5 | SUSE-SU-2023:2871-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.5.1 | SUSE-SU-2023:2809-1 |
| openSUSE Leap 15.4 | dtb-aarch64 +10 | 5.14.21-150400.24.60.1 | SUSE-SU-2023:1897-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.43.1 | SUSE-SU-2023:1802-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.60.1.150400.24.24.3 | SUSE-SU-2023:1897-1 |
| openSUSE Leap 15.4 | kernel-rt +3 | 5.14.21-150400.15.23.1 | SUSE-SU-2023:1992-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | kernel-default | 5.14.21-150400.24.60.1 | SUSE-SU-2023:1897-1 |
| openSUSE Leap Micro 5.3 | kernel-default-base | 5.14.21-150400.24.60.1.150400.24.24.3 | SUSE-SU-2023:1897-1 |
| openSUSE Leap Micro 5.3 | kernel-rt | 5.14.21-150400.15.23.1 | SUSE-SU-2023:1992-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.107.1-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.2.0-362.8.1.el9_3 | ELSA-2023-6583 |
| Oracle Linux 9 | rv +25 | 5.14.0-362.8.1.el9_3 | ELSA-2023-6583 |
Advisories 33
- USN-6134-1 linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6079-1 linux, linux-aws, linux-azure, linux-azure-5.19, linux-kvm, linux-lowlatency, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6096-1 linux-gcp, linux-hwe-5.19 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6025-1 linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde, linux-gcp, linux-gcp-5.15, linux-gke, linux-gke-5.15, linux-gkeop, linux-ibm, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6040-1 linux-hwe-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-6057-1 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- RHSA-2023:6583 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2025:10675 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2025:10671 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SSA-265688 SSA-265688: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP V1.1 Siemens ProductCERT · Oct 13, 2026
- RHSA-2025:10193 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2025:10174 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- ICSA-24-102-01 Siemens SIMATIC S7-1500 TM MFP CISA ICS & IT advisories · May 14, 2026
- SUSE-SU-2023:2646-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1992-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1978-1 Security update for the Linux Kernel RT (Live Patch 5 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2871-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1977-1 Security update for the Linux Kernel RT (Live Patch 3 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2043-1 Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2055-1 Security update for the Linux Kernel (Live Patch 8 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1176-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1241-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1183-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2031-1 Security update for the Linux Kernel (Live Patch 6 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2032-1 Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1975-1 Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1195-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2809-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1897-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0774 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jul 8, 2025
- SUSE-SU-2023:2035-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP4) SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2023:1802-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2023-6583 Important: kernel security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 12, 2023