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CVE-2025-38608

8.6 · HIGH

In the Linux kernel, the following vulnerability has been resolved: bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls When sending plaintext data, we initially calculated the c…

Published Aug 19, 2025CWE-908EPSS 0.40%

Overview

CVE-2025-38608 is a high-severity vulnerability. It was published on August 19, 2025 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls

When sending plaintext data, we initially calculated the corresponding

ciphertext length. However, if we later reduced the plaintext data length

via socket policy, we failed to recalculate the ciphertext length.

This results in transmitting buffers containing uninitialized data during

ciphertext transmission.

This causes uninitialized bytes to be appended after a complete

"Application Data" packet, leading to errors on the receiving end when

parsing TLS record.

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/0e853c1464bcf61207f8b5c32d2ac5ee495e859dRefgit.kernel.org/stable/c/16aca8bb4ad0d8a13c8b6da4007f4e52d53035bbRefgit.kernel.org/stable/c/178f6a5c8cb3b6be1602de0964cd440243f493c9Refgit.kernel.org/stable/c/1e480387d4b42776f8957fb148af9d75ce93b96dRefgit.kernel.org/stable/c/6ba20ff3cdb96a908b9dc93cf247d0b087672e7cRefgit.kernel.org/stable/c/73fc5d04009d3969ff8e8574f0fd769f04124e59Refgit.kernel.org/stable/c/849d24dc5aed45ebeb3490df429356739256ac40Refgit.kernel.org/stable/c/90d6ef67440cec2a0aad71a0108c8f216437345cRefgit.kernel.org/stable/c/ee03766d79de0f61ea29ffb6ab1c7b196ea1b02eReflists.debian.org/debian-lts-announce/2025/10/msg00007.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38608?

CVE-2025-38608 is a high-severity vulnerability. It was published on August 19, 2025 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2025-38608?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-38608?

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-2025-38608?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38608 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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