Vulnerability · Published Sep 16, 2025 · Assigned by Linux
CVE-2025-39825smb: client: fix race with concurrent opens in rename(2)
High 7.8
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.1%top 98.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding I/O to complete as well as marking all existing open handles as deleted to prevent them from deferring closes, which increases the race window for potential concurrent opens on the target file. Fix this by unhashing the dentry in advance to prevent any concurrent opens on the target.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.87.1.rt7.428.el8_10 | ALSA-2025:22387 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | perf | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.87.1.el8_10 | ALSA-2025:22388 |
| Debian:12 | linux | 6.1.153-1 | DEBIAN-CVE-2025-39825 |
| Debian:13 | linux | 6.12.48-1 | DEBIAN-CVE-2025-39825 |
| Debian:14 | linux | 6.16.5-1 | DEBIAN-CVE-2025-39825 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.87.1.el8_10 | RLSA-2025:22388 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.87.1.rt7.428.el8_10 | RLSA-2025:22387 |
| Ubuntu:22.04:LTS | linux | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux | 6.8.0-106.106 | USN-8095-1 |
| Ubuntu:24.04:LTS | linux | 6.8.0-106.106 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-aws | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1050.53 | USN-8095-1 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1050.53 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1050.53~22.04.1 | USN-8095-4 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1050.53~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1051.57 | USN-8125-1 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1051.57 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1051.57~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-fde | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-azure-fde | 6.8.0-1058.65 | UBUNTU-CVE-2025-39825 |
| Ubuntu:25.10 | linux-azure-fde | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.8 | 6.8.0-1058.65~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-azure-nvidia | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-gcp | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1052.55 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1052.55 | USN-8095-1 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1052.55~22.04.1 | USN-8095-1 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1052.55~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-gke | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1048.53 | USN-8095-1 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1048.53 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-gkeop | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1035.38 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1035.38 | USN-8095-1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-106.106~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-106.106~22.04.1 | USN-8095-1 |
| Ubuntu:22.04:LTS | linux-ibm | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1049.49 | USN-8095-1 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1049.49 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1049.49~22.04.1 | USN-8095-1 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1049.49~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-intel | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-intel-iotg | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-kvm | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-lowlatency | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-106.106.1 | USN-8095-1 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-106.106.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-106.106.1~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-106.106.1~22.04.1 | USN-8095-1 |
| Ubuntu:22.04:LTS | linux-nvidia | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1049.52 | USN-8100-1 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1049.52 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1049.52~22.04.1 | USN-8100-1 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1049.52~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1049.52.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1049.52.1 | USN-8100-1 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-nvidia-tegra | 6.8.0-1020.20 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-oracle | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1047.48 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1047.48 | USN-8095-1 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1047.48~22.04.1 | USN-8095-1 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1047.48~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1050.54 | USN-8095-5 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1050.54 | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-106.106~22.04.1 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2025-39825 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1029.30 | USN-8261-1 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1028.29 | UBUNTU-CVE-2025-39825 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | no fix listed | UBUNTU-CVE-2025-39825 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 78c09634f7dc061a3bd09704cdbebb3762a45cdf – before c9e7de284da0be5b44dbe79d71573f9f7f9b144c78c09634f7dc061a3bd09704cdbebb3762a45cdf – before 24b9ed739c8c5b464d983e12cf308982f3ae93c278c09634f7dc061a3bd09704cdbebb3762a45cdf – before c9991af5e09924f6f3b3e6996a5e09f9504b435878c09634f7dc061a3bd09704cdbebb3762a45cdf – before 289f945acb20b9b54fe4d13895e44aa58965ddb278c09634f7dc061a3bd09704cdbebb3762a45cdf – before d84291fc7453df7881a970716f8256273aca5747 |
| Linux | Linux | 5.13 |
References
- https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c
- https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2
- https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358
- https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2
- https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html