vulnerability
Red Hat: CVE-2025-38306: kernel: fs/fhandle.c: fix a race in call of has_locked_children()
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:S/C:C/I:C/A:C) | Jul 10, 2025 | Jul 14, 2025 | Jul 15, 2025 |
Severity
7
CVSS
(AV:L/AC:M/Au:S/C:C/I:C/A:C)
Published
Jul 10, 2025
Added
Jul 14, 2025
Modified
Jul 15, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
fs/fhandle.c: fix a race in call of has_locked_children()
may_decode_fh() is calling has_locked_children() while holding no locks.
That's an oopsable race...
The rest of the callers are safe since they are holding namespace_sem and
are guaranteed a positive refcount on the mount in question.
Rename the current has_locked_children() to __has_locked_children(), make
it static and switch the fs/namespace.c users to it.
Make has_locked_children() a wrapper for __has_locked_children(), calling
the latter under read_seqlock_excl(&mount_lock).
Solution
no-fix-redhat-rpm-package
References
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.