CVE-2025-38306 Information

Jul 12, 2025 cve

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).

CNNVD-202507-1432 (Published: 2025-07-10)

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