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CVE-2025-38569

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: benet: fix BUG when creating VFs benet crashes as soon as SRIOV VFs are created: kernel BUG at mm/vmalloc.c:3457!

Published Aug 19, 2025CWE-476EPSS 0.17%

Overview

CVE-2025-38569 is a medium-severity vulnerability. It was published on August 19, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, 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:

benet: fix BUG when creating VFs

benet crashes as soon as SRIOV VFs are created:

kernel BUG at mm/vmalloc.c:3457!

Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI

CPU: 4 UID: 0 PID: 7408 Comm: test.sh Kdump: loaded Not tainted 6.16.0+ #1 PREEMPT(voluntary)

[...]

RIP: 0010:vunmap+0x5f/0x70

[...]

Call Trace:

<TASK>

__iommu_dma_free+0xe8/0x1c0

be_cmd_set_mac_list+0x3fe/0x640 [be2net]

be_cmd_set_mac+0xaf/0x110 [be2net]

be_vf_eth_addr_config+0x19f/0x330 [be2net]

be_vf_setup+0x4f7/0x990 [be2net]

be_pci_sriov_configure+0x3a1/0x470 [be2net]

sriov_numvfs_store+0x20b/0x380

kernfs_fop_write_iter+0x354/0x530

vfs_write+0x9b9/0xf60

ksys_write+0xf3/0x1d0

do_syscall_64+0x8c/0x3d0

be_cmd_set_mac_list() calls dma_free_coherent() under a spin_lock_bh.

Fix it by freeing only after the lock has been released.

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/0ddfe8b127ef1149fddccb79db6e6eaba7738e7dRefgit.kernel.org/stable/c/3697e37e012bbd2bb5a5b467689811ba097b2effRefgit.kernel.org/stable/c/46d44a23a3723a89deeb65b13cddb17f8d9f2700Refgit.kernel.org/stable/c/5a40f8af2ba1b9bdf46e2db10e8c9710538fbc63Refgit.kernel.org/stable/c/975e73b9102d844a3dc3f091ad631c56145c8b4cRefgit.kernel.org/stable/c/c377ba2be9430d165a98e4b782902ed630bc7546Refgit.kernel.org/stable/c/d5dc09ee5d74277bc47193fe28ce8703e229331bRefgit.kernel.org/stable/c/f4e4e0c4bc4d799d6fa39055acdbc3af066cd13eRefgit.kernel.org/stable/c/f80b34ebc579216407b128e9d155bfcae875c30fReflists.debian.org/debian-lts-announce/2025/10/msg00007.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38569?

CVE-2025-38569 is a medium-severity vulnerability. It was published on August 19, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38569?

This vulnerability has a CVSS 3.1 base score of 5.5, 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-2025-38569?

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-2025-38569?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38569 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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