CVE-2025-38058
Linux Kernel Mount Lock Bypass Vulnerability
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.
INFO
Published Date :
June 18, 2025, 10:15 a.m.
Last Modified :
June 18, 2025, 1:46 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel and related packages.
- Reboot the system to apply the updates.
Public PoC/Exploit Available at Github
CVE-2025-38058 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-38058.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-38058 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-38058
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
DSA and DLA for Debian last 14 days
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-38058 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-38058 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 18, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/250cf3693060a5f803c5f1ddc082bb06b16112a9 Added Reference https://git.kernel.org/stable/c/628fb00195ce21a90cf9e4e3d105cd9e58f77b40 Added Reference https://git.kernel.org/stable/c/8cafd7266fa02e0863bacbf872fe635c0b9725eb Added Reference https://git.kernel.org/stable/c/9b0915e72b3cf52474dcee0b24a2f99d93e604a3 Added Reference https://git.kernel.org/stable/c/b55996939c71a3e1a38f3cdc6a8859797efc9083 Added Reference https://git.kernel.org/stable/c/b89eb56a378b7b2c1176787fc228d0a57172bdd5 Added Reference https://git.kernel.org/stable/c/d8ece4ced3b051e656c77180df2e69e19e24edc1 Added Reference https://git.kernel.org/stable/c/f6d45fd92f62845cbd1eb5128fd8f0ed7d0c5a42