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CVE-2025-38233

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: powerpc64/ftrace: fix clobbered r15 during livepatching While r15 is clobbered always with PPC_FTRACE_OUT_OF_LINE, it is not re…

Published Jul 4, 2025EPSS 0.16%

Overview

CVE-2025-38233 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:

powerpc64/ftrace: fix clobbered r15 during livepatching

While r15 is clobbered always with PPC_FTRACE_OUT_OF_LINE, it is

not restored in livepatch sequence leading to not so obvious fails

like below:

BUG: Unable to handle kernel data access on write at 0xc0000000000f9078

Faulting instruction address: 0xc0000000018ff958

Oops: Kernel access of bad area, sig: 11 [#1]

...

NIP: c0000000018ff958 LR: c0000000018ff930 CTR: c0000000009c0790

REGS: c00000005f2e7790 TRAP: 0300 Tainted: G K (6.14.0+)

MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 2822880b XER: 20040000

CFAR: c0000000008addc0 DAR: c0000000000f9078 DSISR: 0a000000 IRQMASK: 1

GPR00: c0000000018f2584 c00000005f2e7a30 c00000000280a900 c000000017ffa488

GPR04: 0000000000000008 0000000000000000 c0000000018f24fc 000000000000000d

GPR08: fffffffffffe0000 000000000000000d 0000000000000000 0000000000008000

GPR12: c0000000009c

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/a9212bf5ca640232254b31330e86272fe4073bc9Refgit.kernel.org/stable/c/cb5b691f8273432297611863ac142e17119279e0

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38233?

CVE-2025-38233 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-2025-38233?

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-2025-38233?

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-2025-38233?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38233 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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