DEBIAN-CVE-2025-40176

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2025-40176
Downstream
DLA-4379-1
Published: 12 Nov 2025, 11:15
Last modified:28 Apr 2026, 20:30

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Nov 2025, 11:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:30
Last Modified
Vulnerability information updated

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.

Affected Systems

  • debian•linux

    < 6.1.158-1 | < 6.12.57-1 | < 6.17.6-1

  • debian•linux-6.1

    < 6.1.158-1~deb11u1

References (1)