CVE-2025-38616

Published Aug 22, 2025

Last updated 5 months ago

CVSS high 7.1

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: tls: handle data disappearing from under the TLS ULP TLS expects that it owns the receive queue of the TCP socket. This cannot be guaranteed in case the reader of the TCP socket entered before the TLS ULP was installed, or uses some non-standard read API (eg. zerocopy ones). Replace the WARN_ON() and a buggy early exit (which leaves anchor pointing to a freed skb) with real error handling. Wipe the parsing state and tell the reader to retry. We already reload the anchor every time we (re)acquire the socket lock, so the only condition we need to avoid is an out of bounds read (not having enough bytes in the socket for previously parsed record len). If some data was read from under TLS but there's enough in the queue we'll reload and decrypt what is most likely not a valid TLS record. Leading to some undefined behavior from TLS perspective (corrupting a stream? missing an alert? missing an attack?) but no kernel crash should take place.
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Analyzed
Products
linux_kernel

Risk scores

CVSS 3.1

Type
Primary
Base score
7.1
Impact score
5.2
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Severity
HIGH

Weaknesses

nvd@nist.gov
CWE-125

Social media

Hype score
Not currently trending

  1. ⚠️Vulnerabilidades en productos SUSE ❗CVE-2025-23145 ❗CVE-2025-38616 ❗CVE-2025-38500 ➡️Más info: https://t.co/PpGqCkALrI https://t.co/N8cVjib3pK

    @CERTpy

    1 Dec 2025

    85 Impressions

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  2. Just published a deep-dive on a critical #SUSE Linux kernel security patch. CVE-2025-38616 is a TLS vulnerability that could cause data to "disappear" mid-transmission. It's a high-severity issue (7.4) for enterprise users. Read more: 👉 https://t.co/c0XObPqZGC #Security http

    @Cezar_H_Linux

    24 Nov 2025

    13 Impressions

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  3. CVE-2025-38616 In the Linux kernel, the following vulnerability has been resolved: tls: handle data disappearing from under the TLS ULP TLS expects that it owns the receive queue … https://t.co/PXobUXHBu4

    @CVEnew

    22 Aug 2025

    276 Impressions

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Configurations

Related CVEs

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References

Sources include official advisories and independent security research.