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CVE-2025-38232

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix race between nfsd registration and exports_proc As of now nfsd calls create_proc_exports_entry() at start of init_nfs…

Published Jul 4, 2025CWE-362EPSS 0.17%

Overview

CVE-2025-38232 is a high-severity vulnerability. It was published on July 4, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

NFSD: fix race between nfsd registration and exports_proc

As of now nfsd calls create_proc_exports_entry() at start of init_nfsd

and cleanup by remove_proc_entry() at last of exit_nfsd.

Which causes kernel OOPs if there is race between below 2 operations:

(i) exportfs -r

(ii) mount -t nfsd none /proc/fs/nfsd

for 5.4 kernel ARM64:

CPU 1:

el1_irq+0xbc/0x180

arch_counter_get_cntvct+0x14/0x18

running_clock+0xc/0x18

preempt_count_add+0x88/0x110

prep_new_page+0xb0/0x220

get_page_from_freelist+0x2d8/0x1778

__alloc_pages_nodemask+0x15c/0xef0

__vmalloc_node_range+0x28c/0x478

__vmalloc_node_flags_caller+0x8c/0xb0

kvmalloc_node+0x88/0xe0

nfsd_init_net+0x6c/0x108 [nfsd]

ops_init+0x44/0x170

register_pernet_operations+0x114/0x270

register_pernet_subsys+0x34/0x50

init_nfsd+0xa8/0x718 [nfsd]

do_one_initcall+0x54/0x2e0

CPU 2 :

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010

PC is at : exports

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2029ca75cdfa6a25716a5a76b751486cce7e3822Refgit.kernel.org/stable/c/327011a2bb4f7de9c72b891a96ce8d902828bddfRefgit.kernel.org/stable/c/49b57b98fa601ae6cc7897bab4515129da8290f7Refgit.kernel.org/stable/c/8120e420013d947c890f358f30a2d98ba8ac20bcRefgit.kernel.org/stable/c/88d6785c173a7c4de05bef8c4fd8a9b42ead02d5Refgit.kernel.org/stable/c/f7fb730cac9aafda8b9813b55d04e28a9664d17cRefcert-portal.siemens.com/productcert/html/ssa-019113.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38232?

CVE-2025-38232 is a high-severity vulnerability. It was published on July 4, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38232?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38232?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-38232?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38232 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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