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CVE-2025-38462

4.7 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: vsock: Fix transport_{g2h,h2g} TOCTOU vsock_find_cid() and vsock_dev_do_ioctl() may race with module unload.

Published Jul 25, 2025CWE-367EPSS 0.13%

Overview

CVE-2025-38462 is a medium-severity vulnerability. It was published on July 25, 2025 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. 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:

vsock: Fix transport_{g2h,h2g} TOCTOU

vsock_find_cid() and vsock_dev_do_ioctl() may race with module unload.

transport_{g2h,h2g} may become NULL after the NULL check.

Introduce vsock_transport_local_cid() to protect from a potential

null-ptr-deref.

KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]

RIP: 0010:vsock_find_cid+0x47/0x90

Call Trace:

__vsock_bind+0x4b2/0x720

vsock_bind+0x90/0xe0

__sys_bind+0x14d/0x1e0

__x64_sys_bind+0x6e/0xc0

do_syscall_64+0x92/0x1c0

entry_SYSCALL_64_after_hwframe+0x4b/0x53

KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]

RIP: 0010:vsock_dev_do_ioctl.isra.0+0x58/0xf0

Call Trace:

__x64_sys_ioctl+0x12d/0x190

do_syscall_64+0x92/0x1c0

entry_SYSCALL_64_after_hwframe+0x4b/0x53

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/209fd720838aaf1420416494c5505096478156b4Refgit.kernel.org/stable/c/3734d78210cceb2ee5615719a62a5c55ed381ff8Refgit.kernel.org/stable/c/401239811fa728fcdd53e360a91f157ffd23e1f4Refgit.kernel.org/stable/c/5752d8dbb3dfd7f1a9faf0f65377e60826ea9a17Refgit.kernel.org/stable/c/6a1bcab67bea797d83aa9dd948a0ac6ed52d121dRefgit.kernel.org/stable/c/80d7dc15805a93d520a249ac6d13d4f4df161c1bRefgit.kernel.org/stable/c/c5496ee685c48ed1cc183cd4263602579bb4a615Reflists.debian.org/debian-lts-announce/2025/10/msg00007.htmlReflists.debian.org/debian-lts-announce/2025/10/msg00008.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38462?

CVE-2025-38462 is a medium-severity vulnerability. It was published on July 25, 2025 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2025-38462?

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38462?

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-2025-38462?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38462 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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