🛡️ CVE-2025-38058 on Ubuntu — linux
Description
In the Linux kernel, the following vulnerability has been resolved: __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock ... or we risk stealing final mntput from sync umount - raising mnt_count after umount(2) has verified that victim is not busy, but before it has set MNT_SYNC_UMOUNT; in that case __legitimize_mnt() doesn't see that it's safe to quietly undo mnt_count increment and leaves dropping the reference to caller, where it'll be a full-blown mntput(). Check under mount_lock is needed; leaving the current one done before taking that makes no sense - it's nowhere near common enough to bother with.
Distribution advisory
This page covers CVE-2025-38058 as tracked by Ubuntu, for the package linux. The fix is available in version 6.8.0-100.100; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
Weakness class
UBUNTU-CVE-2025-38058 is classified as CWE-667: Improper Locking. The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.
Affected software
UBUNTU-CVE-2025-38058 is recorded against 146 packages.
- linux (fixed in 6.8.0-100.100)
- linux-allwinner-5.19
- linux-aws (fixed in 6.8.0-1046.49)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1090.97~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.4
- linux-aws-5.8
- linux-aws-6.14 (fixed in 6.14.0-1013.13~24.04.1)
- linux-aws-6.2
- linux-aws-6.5
- linux-aws-6.8 (fixed in 6.8.0-1046.49~22.04.1)
- linux-aws-fips (fixed in 6.8.0-1046.49+fips1)
- linux-aws-hwe
- linux-azure (fixed in 6.8.0-1046.52)
- linux-azure-4.15
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1094.103~20.04.1)
- linux-azure-5.19
- linux-azure-5.3
Show the remaining 122 packages
- linux-azure-5.4
- linux-azure-5.8
- linux-azure-6.11
- linux-azure-6.2
- linux-azure-6.5
- linux-azure-6.8 (fixed in 6.8.0-1051.57~22.04.1)
- linux-azure-edge
- linux-azure-fde
- linux-azure-fde-5.15 (fixed in 5.15.0-1114.123~20.04.1)
- linux-azure-fde-5.19
- linux-azure-fde-6.2
- linux-azure-fde-6.8
- linux-azure-fips (fixed in 6.8.0-1046.52+fips1)
- linux-azure-nvidia
- linux-azure-nvidia-6.14 (fixed in 6.14.0-1007.7)
- linux-bluefield
- linux-fips (fixed in 6.8.0-100.100+fips1)
- linux-gcp (fixed in 6.8.0-1047.50)
- linux-gcp-4.15
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1090.99~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.4
- linux-gcp-5.8
- linux-gcp-6.11
- linux-gcp-6.14 (fixed in 6.14.0-1016.17~24.04.1)
- linux-gcp-6.2
- linux-gcp-6.5
- linux-gcp-6.8 (fixed in 6.8.0-1047.50~22.04.2)
- linux-gcp-fips (fixed in 6.8.0-1047.50+fips1)
- linux-gke (fixed in 6.8.0-1043.48)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 6.8.0-1030.33)
- linux-gkeop-5.15
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-152.162~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.4
- linux-hwe-5.8
- linux-hwe-6.11
- linux-hwe-6.2
- linux-hwe-6.5
- linux-hwe-6.8 (fixed in 6.8.0-100.100~22.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 6.8.0-1044.44)
- linux-ibm-5.15 (fixed in 5.15.0-1083.86~20.04.1)
- linux-ibm-5.4
- linux-ibm-6.8 (fixed in 6.8.0-1044.44~22.04.1)
- linux-intel
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1083.85)
- linux-intel-iotg (fixed in 5.15.0-1085.91)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1085.91~20.04.1)
- linux-iot
- linux-kvm (fixed in 5.15.0-1086.91)
- linux-lowlatency (fixed in 6.8.0-100.100.1)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-152.162~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.11
- linux-lowlatency-hwe-6.2
- linux-lowlatency-hwe-6.5
- linux-lowlatency-hwe-6.8 (fixed in 6.8.0-100.100.1~22.04.1)
- linux-lts-xenial
- linux-nvidia (fixed in 6.8.0-1046.49)
- linux-nvidia-6.11
- linux-nvidia-6.2
- linux-nvidia-6.5
- linux-nvidia-6.8 (fixed in 6.8.0-1046.49~22.04.1)
- linux-nvidia-lowlatency (fixed in 6.8.0-1046.49.1)
- linux-nvidia-tegra (fixed in 6.8.0-1020.20)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1043.43~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1032.32)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14
- linux-oem-5.17
- linux-oem-5.6
- linux-oem-6.0
- linux-oem-6.1
- linux-oem-6.11
- linux-oem-6.14 (fixed in 6.14.0-1012.12)
- linux-oem-6.5
- linux-oem-6.8
- linux-oracle (fixed in 6.8.0-1043.44)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1088.94~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4
- linux-oracle-5.8
- linux-oracle-6.14 (fixed in 6.14.0-1013.13~24.04.1)
- linux-oracle-6.5
- linux-oracle-6.8 (fixed in 6.8.0-1043.44~22.04.1)
- linux-raspi (fixed in 6.8.0-1047.51)
- linux-raspi-5.4
- linux-raspi-realtime (fixed in 6.8.0-2037.38)
- linux-raspi2
- linux-realtime (fixed in 6.8.1-1041.42)
- linux-realtime-6.14 (fixed in 6.14.0-1012.12~24.04.1)
- linux-realtime-6.8 (fixed in 6.8.1-1041.42~22.04.1)
- linux-riscv
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1085.89~20.04.1)
- linux-riscv-5.19
- linux-riscv-5.8
- linux-riscv-6.14 (fixed in 6.14.0-32.32.1~24.04.1)
- linux-riscv-6.5
- linux-riscv-6.8 (fixed in 6.8.0-100.100~22.04.1)
- linux-starfive-5.19
- linux-starfive-6.2
- linux-starfive-6.5
- linux-xilinx (fixed in 6.8.0-1023.24)
- linux-xilinx-zynqmp (fixed in 5.15.0-1054.58)
Timeline and source
Published on 18 June 2025 and last revised on 19 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
CVE-2025-38058 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 6.8.0-100.100 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 6.8.0-1046.49 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1090.97~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.14 | — | 6.14.0-1013.13~24.04.1 |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1046.49~22.04.1 |
| linux-aws-fips | — | 6.8.0-1046.49+fips1 |
| linux-aws-hwe | — | — |
| linux-azure | — | 6.8.0-1046.52 |
| linux-azure-4.15 | — | — |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1094.103~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.11 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1051.57~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.15 | — | 5.15.0-1114.123~20.04.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fde-6.8 | — | — |
| linux-azure-fips | — | 6.8.0-1046.52+fips1 |
| linux-azure-nvidia | — | — |
| linux-azure-nvidia-6.14 | — | 6.14.0-1007.7 |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-100.100+fips1 |
| linux-gcp | — | 6.8.0-1047.50 |
| linux-gcp-4.15 | — | — |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1090.99~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.11 | — | — |
| linux-gcp-6.14 | — | 6.14.0-1016.17~24.04.1 |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1047.50~22.04.2 |
| linux-gcp-fips | — | 6.8.0-1047.50+fips1 |
| linux-gke | — | 6.8.0-1043.48 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 6.8.0-1030.33 |
| linux-gkeop-5.15 | — | — |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-152.162~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.11 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-100.100~22.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 6.8.0-1044.44 |
| linux-ibm-5.15 | — | 5.15.0-1083.86~20.04.1 |
| linux-ibm-5.4 | — | — |
| linux-ibm-6.8 | — | 6.8.0-1044.44~22.04.1 |
| linux-intel | — | — |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1083.85 |
| linux-intel-iotg | — | 5.15.0-1085.91 |
| linux-intel-iotg-5.15 | — | 5.15.0-1085.91~20.04.1 |
| linux-iot | — | — |
| linux-kvm | — | 5.15.0-1086.91 |
| linux-lowlatency | — | 6.8.0-100.100.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-152.162~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.11 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lowlatency-hwe-6.8 | — | 6.8.0-100.100.1~22.04.1 |
| linux-lts-xenial | — | — |
| linux-nvidia | — | 6.8.0-1046.49 |
| linux-nvidia-6.11 | — | — |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1046.49~22.04.1 |
| linux-nvidia-lowlatency | — | 6.8.0-1046.49.1 |
| linux-nvidia-tegra | — | 6.8.0-1020.20 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1043.43~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1032.32 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | — |
| linux-oem-6.11 | — | — |
| linux-oem-6.14 | — | 6.14.0-1012.12 |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | — |
| linux-oracle | — | 6.8.0-1043.44 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1088.94~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | — |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.14 | — | 6.14.0-1013.13~24.04.1 |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1043.44~22.04.1 |
| linux-raspi | — | 6.8.0-1047.51 |
| linux-raspi-5.4 | — | — |
| linux-raspi-realtime | — | 6.8.0-2037.38 |
| linux-raspi2 | — | — |
| linux-realtime | — | 6.8.1-1041.42 |
| linux-realtime-6.14 | — | 6.14.0-1012.12~24.04.1 |
| linux-realtime-6.8 | — | 6.8.1-1041.42~22.04.1 |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1085.89~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.14 | — | 6.14.0-32.32.1~24.04.1 |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-100.100~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx | — | 6.8.0-1023.24 |
| linux-xilinx-zynqmp | — | 5.15.0-1054.58 |
References
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