CVE-2025-40176

Linux Kernel 6.0.0-6.1.157, 6.2.0-6.6.113, 6.7.0-6.12.54, 6.13.0-6.17.4 - Use-After-Free in TLS Async Decryption

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: tls: wait for pending async decryptions if tls_strp_msg_hold fails Async decryption calls tls_strp_msg_hold to create a clone of the input skb to hold references to the memory it uses. If we fail to allocate that clone, proceeding with async decryption can lead to various issues (UAF on the skb, writing into userspace memory after the recv() call has returned). In this case, wait for all pending decryption requests.

Scores

EPSS 0.0018
EPSS Percentile 8.1%

Details

Status published
Products (16)
linux/Kernel 6.0.0 - 6.1.158linux
linux/Kernel 6.13.0 - 6.17.5linux
linux/Kernel 6.2.0 - 6.6.114linux
linux/Kernel 6.7.0 - 6.12.55linux
Linux/Linux < 6.0
Linux/Linux 6.0
Linux/Linux 6.1.158 - 6.1.*
Linux/Linux 6.12.55 - 6.12.*
Linux/Linux 6.17.5 - 6.17.*
Linux/Linux 6.18
... and 6 more
Published Nov 12, 2025
Tracked Since Feb 18, 2026